That's quite peculiar, I have the 10.8 and 10.7 versions running poclbm on stratum.bitcoin.cz without any issues. If you could report back with the accept/reject number of shares and reported speed on bitcoin.cz when you leave where you are as well as how it goes at home I would be grateful!
Well the bad news for me is that it seems to work fine at home, so my company must block the stratum ports/interface or something! 