I have 10 connections stable with these nodes on windows 7 x64.
addnode=213.239.208.169
addnode=184.164.129.202
addnode=5.196.190.82
addnode=88.99.248.15
addnode=212.24.106.51
addnode=96.42.245.238
addnode=46.188.4.74
addnode=66.55.64.183
addnode=207.126.164.133
addnode=173.68.195.199
addnode=173.68.195.199
addnode=104.168.146.234
addnode=73.10.255.44
addnode=94.222.60.97
addnode=85.24.142.152
addnode=173.68.195.199
addnode=185.173.33.92
addnode=185.66.140.234
addnode=118.102.74.85
addnode=118.102.74.85
addnode=217.175.119.125
addnode=212.237.1.117
addnode=24.218.196.229
addnode=2a01:4f8:130:6174::2
addnode=188.214.30.136
addnode=92.111.0.82
addnode=100.7.82.219
addnode=70.185.176.144
addnode=74.67.25.92
addnode=78.144.97.130
addnode=222.5.183.201
addnode=75.97.156.14
addnode=68.7.70.146
addnode=196.52.39.17
addnode=67.84.22.18
addnode=86.132.243.75
addnode=201.170.210.52
addnode=45.55.195.243
addnode=92.56.6.27
addnode=70.27.120.188
addnode=212.28.152.210
addnode=86.163.115.184
addnode=103.241.225.89
addnode=173.212.232.167
addnode=83.87.24.90
addnode=91.121.77.74
addnode=77.121.99.19
addnode=54.172.10.181
addnode=68.36.216.167
addnode=68.106.230.16
addnode=88.91.23.49
addnode=95.182.185.176
addnode=77.247.224.34
addnode=89.132.223.238
addnode=24.234.86.102
addnode=149.56.154.75
addnode=88.83.15.64
addnode=78.42.198.233
addnode=217.246.119.238
addnode=94.114.48.67
addnode=217.129.103.21
addnode=175.141.71.165
addnode=46.233.193.67
addnode=173.239.215.28
addnode=87.214.144.25
addnode=173.68.195.199
addnode=173.68.195.199
addnode=173.68.195.199
addnode=193.105.7.113
addnode=173.68.195.199
addnode=173.68.195.199
addnode=67.149.252.238
addnode=115.164.218.93
addnode=96.55.33.98
addnode=212.26.236.118
addnode=99.117.32.17
addnode=173.8.234.158
addnode=82.117.250.10
addnode=77.82.171.223
addnode=91.201.178.131
addnode=77.248.45.187
addnode=207.196.200.255
addnode=37.144.93.141
addnode=27.145.176.180
addnode=82.34.73.21
addnode=177.82.155.10
addnode=87.239.72.61
addnode=213.87.148.21
addnode=71.233.49.111
addnode=83.254.20.173
addnode=176.249.133.156
addnode=81.177.26.128
addnode=93.77.17.233
addnode=80.237.123.43
addnode=94.20.159.110
addnode=199.87.138.161
addnode=201.178.25.194
addnode=190.186.85.32
addnode=94.19.97.15
addnode=2a02:2788:616:a55:b57e:c741:7003:2172
addnode=62.163.242.135
addnode=97.126.65.26
addnode=77.230.43.123
addnode=184.66.37.95
addnode=69.130.148.120
addnode=34.209.204.201
addnode=96.52.192.225
addnode=182.55.186.7
addnode=220.244.207.48
addnode=89.44.197.222
addnode=69.130.148.120
addnode=52.232.98.254
addnode=50.83.78.9
addnode=2a01:e0a:1a:8890:5c92:6f68:599b:be79
addnode=94.181.74.19
addnode=90.154.66.57
addnode=103.230.105.26
addnode=103.240.207.169
addnode=103.241.225.89
addnode=104.238.46.133
addnode=104.238.46.224
addnode=104.46.45.17
addnode=107.173.26.140
addnode=109.162.82.110
addnode=109.60.201.34
addnode=111.117.123.41
addnode=111.207.202.4
addnode=113.61.250.27
addnode=115.164.218.93
addnode=115.66.212.164
addnode=116.98.41.238
addnode=118.102.74.85
addnode=124.122.44.216
addnode=14.200.150.36
addnode=144.76.71.141
addnode=145.130.172.180
addnode=146.255.182.186
addnode=149.56.154.75
addnode=159.147.45.223
addnode=168.235.149.25
addnode=173.212.232.167
addnode=173.239.210.34
addnode=173.239.215.28
addnode=173.239.216.13
addnode=173.68.195.199
addnode=174.119.101.246
addnode=174.57.183.51
addnode=176.14.62.149
addnode=176.249.133.156
addnode=176.26.239.128
addnode=176.97.14.36
addnode=177.10.0.90
addnode=177.139.42.68
addnode=178.210.13.98
addnode=179.34.95.122
addnode=180.70.237.110
addnode=184.164.129.202
addnode=184.55.180.40
addnode=184.66.37.95
addnode=185.117.101.202
addnode=185.120.124.247
addnode=185.162.138.18
addnode=188.186.84.2
addnode=188.214.30.136
addnode=188.243.232.224
addnode=189.219.122.180
addnode=190.176.73.162
addnode=191.241.4.139
addnode=195.200.244.73
addnode=199.87.138.161
addnode=2.83.125.97
addnode=2.95.166.140
addnode=201.170.210.52
addnode=201.178.25.194
addnode=201.230.248.169
addnode=207.126.164.133
addnode=207.196.200.16
addnode=207.196.200.255
addnode=212.180.193.134
addnode=212.24.106.51
addnode=212.26.236.118
addnode=213.127.101.130
addnode=213.168.66.146
addnode=213.239.208.169
addnode=213.87.134.23
addnode=213.87.148.21
addnode=216.150.99.220
addnode=217.129.103.21
addnode=217.175.119.125
addnode=217.246.119.238
addnode=217.73.139.4
addnode=217.87.204.228
addnode=219.92.144.118
addnode=222.127.108.7
addnode=222.5.183.201
addnode=23.95.26.100
addnode=24.132.155.231
addnode=24.135.180.59
addnode=24.246.166.250
addnode=24.64.249.203
addnode=27.145.176.180
addnode=31.17.252.109
addnode=31.173.87.230
addnode=31.192.142.194
addnode=32.209.15.148
addnode=34.209.204.201
addnode=37.171.213.160
addnode=45.55.195.243
addnode=46.188.4.74
addnode=46.233.193.67
addnode=46.5.81.229
addnode=49.146.41.232
addnode=49.225.241.105
addnode=49.71.178.156
addnode=49.71.179.65
addnode=50.83.78.9
addnode=52.232.98.254
addnode=54.172.10.181
addnode=62.163.242.135
addnode=64.250.42.140
addnode=66.55.64.183
addnode=67.191.49.214
addnode=68.36.216.167
addnode=69.130.148.120
addnode=70.161.104.90
addnode=70.185.176.144
addnode=70.27.120.188
addnode=71.233.49.111
addnode=72.235.230.177
addnode=73.10.255.44
addnode=73.163.157.50
addnode=77.121.108.134
addnode=77.121.99.19
addnode=77.172.38.184
addnode=77.230.43.123
addnode=77.247.224.34
addnode=77.82.171.223
addnode=77.82.175.252
addnode=78.0.38.171
addnode=78.144.97.130
addnode=78.200.9.26
addnode=78.206.102.148
addnode=78.98.20.185
addnode=80.110.89.44
addnode=80.113.224.215
addnode=80.213.153.221
addnode=80.237.123.43
addnode=81.251.20.37
addnode=82.117.250.10
addnode=82.154.88.139
addnode=82.199.101.152
addnode=82.34.73.21
addnode=82.45.28.230
addnode=83.132.241.200
addnode=83.8.46.12
addnode=83.87.24.90
addnode=84.112.158.6
addnode=84.197.154.118
addnode=84.28.37.230
addnode=85.24.142.152
addnode=86.121.167.176
addnode=86.132.243.75
addnode=86.135.171.205
addnode=86.157.239.104
addnode=86.5.28.9
addnode=86.84.222.102
addnode=86.95.111.13
addnode=87.214.144.25
addnode=88.21.95.43
addnode=88.215.68.102
addnode=88.81.232.222
addnode=88.88.166.130
addnode=89.132.223.238
addnode=89.178.118.250
addnode=90.127.79.118
addnode=90.38.44.117
addnode=91.121.77.74
addnode=91.160.106.34
addnode=92.111.0.82
addnode=92.186.50.209
addnode=92.82.192.146
addnode=94.114.48.67
addnode=94.178.179.87
addnode=94.20.159.110
addnode=94.212.36.91
addnode=94.37.17.75
addnode=95.121.133.163
addnode=95.173.249.157
addnode=95.180.10.196
addnode=95.25.10.59
addnode=95.91.201.158
addnode=95.91.232.156
addnode=95.91.249.79
addnode=97.126.13.94
addnode=97.98.42.247
addnode=98.114.168.162
addnode=99.117.32.17
getpeerinfo gives these active nodes

[
{
"addr" : "104.128.239.226:13373",
"services" : "00000001",
"lastsend" : 1501426863,
"lastrecv" : 1501426863,
"conntime" : 1500918077,
"version" : 60018,
"subver" : "/Satoshi:1.8.0/",
"inbound" : false,
"startingheight" : 972239,
"banscore" : 0
},
{
"addr" : "188.214.30.136:13373",
"services" : "00000001",
"lastsend" : 1501426863,
"lastrecv" : 1501426806,
"conntime" : 1500962351,
"version" : 60018,
"subver" : "/Satoshi:1.8.0/",
"inbound" : false,
"startingheight" : 973044,
"banscore" : 0
},
{
"addr" : "207.126.164.133:13373",
"services" : "00000001",
"lastsend" : 1501426863,
"lastrecv" : 1501426807,
"conntime" : 1501048576,
"version" : 60018,
"subver" : "/Satoshi:1.8.0/",
"inbound" : false,
"startingheight" : 974546,
"banscore" : 0
},
{
"addr" : "5.196.190.82:13373",
"services" : "00000001",
"lastsend" : 1501426863,
"lastrecv" : 1501426810,
"conntime" : 1501108084,
"version" : 60018,
"subver" : "/Satoshi:1.8.0/",
"inbound" : false,
"startingheight" : 975583,
"banscore" : 0
},
{
"addr" : "87.214.144.25:13373",
"services" : "00000001",
"lastsend" : 1501426820,
"lastrecv" : 1501426863,
"conntime" : 1501168345,
"version" : 60018,
"subver" : "/Satoshi:1.8.0/",
"inbound" : false,
"startingheight" : 976648,
"banscore" : 0
},
{
"addr" : "213.239.208.169:13373",
"services" : "00000001",
"lastsend" : 1501426863,
"lastrecv" : 1501426810,
"conntime" : 1501271626,
"version" : 60018,
"subver" : "/Satoshi:1.8.0/",
"inbound" : false,
"startingheight" : 978539,
"banscore" : 0
},
{
"addr" : "144.76.71.141:13373",
"services" : "00000001",
"lastsend" : 1501426863,
"lastrecv" : 1501426806,
"conntime" : 1501282159,
"version" : 60018,
"subver" : "/Satoshi:1.8.0/",
"inbound" : false,
"startingheight" : 978730,
"banscore" : 0
},
{
"addr" : "45.58.48.166:13373",
"services" : "00000001",
"lastsend" : 1501426863,
"lastrecv" : 1501426806,
"conntime" : 1501346169,
"version" : 60018,
"subver" : "/Satoshi:1.8.0/",
"inbound" : false,
"startingheight" : 979888,
"banscore" : 0
},
{
"addr" : "68.7.70.146:13373",
"services" : "00000001",
"lastsend" : 1501426863,
"lastrecv" : 1501426820,
"conntime" : 1501377316,
"version" : 60018,
"subver" : "/Satoshi:1.8.0/",
"inbound" : false,
"startingheight" : 980420,
"banscore" : 0
},
{
"addr" : "96.55.33.98:13373",
"services" : "00000001",
"lastsend" : 1501426863,
"lastrecv" : 1501425404,
"conntime" : 1501413955,
"version" : 60018,
"subver" : "/Satoshi:1.8.0/",
"inbound" : false,
"startingheight" : 18580,
"banscore" : 0
}
]
So you can add these only if you want, a lot of nodes are old in the first list.
BTW about the linux forking bug, is there a fix coming for that ? basically, in linux mint 18.2 with latest compiled QT client, the blockchain forks about twice a week and there's nothing I can do to avoid it, meanwhile in windows QT this never happens.
