I'm not the only one with this issue.
i have a same problem here, one of the miner just cannot mine in eligius pool, although i can see its speed is 1000G locally, it seems like the local time shown in miner is wrong and maybe the problem
Quoted from:
https://bitcointalksearch.org/topic/m.6157919Any ideas Wiz or Luke?
sorry, as I realized this has been addressed with pretty much the same answer as I received when I mentioned this several pages back, but my KnC (updated to the latest FW and mining on port 3334 since instructed to do so) will not mine at Eligius. It starts out fine but after less than an hour will drop to a few hundred MH/s without switching to failover. I run their embedded version of bfgminer, my BFL units (also using bfgminer) will connect and then after several hours will switch to failover. my units are no longer stable at Eligius, so I switched pools after trying to get them stable at the pool for a few hours each evening over several evenings. While it's been reiterated several times that it's only the site affected by the DDoS attacks, there must be some information or at least a guess why devices configured to run on Eligius for long periods of time without any change (at least in my case) are no longer able to mine consistently at the pool. When it was just an issue with the stats page, I didn't really care, since payouts came when they were ready. I don't give a crap if I wait a day or a week, so long as the sum adds up properly. I do become concerned when the HW begins acting wonky at a particular pool while running stable at others (I've tested 2 others - don't trust many to begin with - and unfortunately all use a different port, so I couldn't rule out that as a possibility). I'm not writing this because I'm assigning blame, as I do not know enough about either my hardware of that of the pool to make any claims. I also didn't want to use any other pool other than Eligius. I actually find the whole issue quite frustrating. in my case, I stopped seeing shares being processed as they normally are, and then watched the devices drop out. perhaps other users experiencing HW issues were only seeing discrepancies between site stats and the readout in their console. that happened to me every time the stats page went into failsafe, and as stated, it never bothered me. I've no read of several users having HW issues. so I not longer get the feeling that the problem is just isolated to my setup. it does appear that the issue is isolated to a few miners, or at least only a few are reporting it.
I also asked for input on how to work around this issue with no useful feedback and have pretty much accepted that my last few months mining, as most of my gear becomes obsolete, will be done elsewhere, which is unfortunate, as I had hoped to ride it out on Eligius until the bitter end. I've written more details about the problems i experienced several pages back in the thread, as it has been almost a month. i won't bother taking time to write it out all over again, since it yielded no result the first time around.
I guess the only question left to the general community is whether or not there are others who are now pretty much unable to use Eligius reliably, as it my case. I mainly want to know this out of curiosity. i hope that others are not having the same level of difficulty connecting and using the pool without incident. i don't wish that on anyone except maybe the odd troll or two.