You can see that there were a whole bunch of blocks mined 10-27 within a few hours, and then no blocks for 24 hours. The testnet difficulty is 140 (compare with 1,400,000 of Bitcoin). Without money incentive to mine, transaction blocks come sporadically whenever someone is experimenting on testnet and decides to mine there for giggles.
40216 a6c0dc28ec... 2011-10-28 12:09:40 13 54634.2954906 3.511
40215 71f81d15f9... 2011-10-28 11:51:40 2 51.6590094 0.653
40214 1708a475ab... 2011-10-27 11:58:55 2 51 0.486
40213 187bf15214... 2011-10-27 11:48:49 2 51.3364906 0.699
40212 27792687ff... 2011-10-27 11:17:44 1 50 0.261
40211 831b0b8c55... 2011-10-27 11:13:30 2 2489.8895 1.237
40210 b387ec2abf... 2011-10-27 10:59:21 1 50 0.261
40209 10437580ba... 2011-10-27 10:58:31 1 50 0.261
40208 10f8b08f9d... 2011-10-27 10:56:55 1 50 0.261
40207 132d87c945... 2011-10-27 10:53:38 1 50 0.261
40206 877876aeb6... 2011-10-27 10:51:33 1 50 0.26
40205 107e704a48... 2011-10-27 10:50:29 7 2009.89 2.788
40204 2246624dbd... 2011-10-27 10:36:51 6 2025.2314906 2.811
40203 176f4b5291... 2011-10-27 10:31:17 4 104.999 1.033
40202 67b13d99b1... 2011-10-27 10:30:05 3 70 0.777
40201 1c393680de... 2011-10-27 10:29:23 9 2044.9975 2.655
40200 601dbbad0e... 2011-10-27 10:02:50 1 50 0.261
40199 12929c7e83... 2011-10-27 09:50:38 11 3529.8985 2.918
40198 119fda6e44... 2011-10-27 08:40:48 6 3029.9 1.915
40197 18db9fba3d... 2011-10-27 08:06:31 34 114190.55773022 9.666
On the regular bitcoin network, which has a consistent hash rate, a new transaction block is created about every 10 minutes, and you get the 6 block "confirmed" status in around an hour.