no it happends every time.
i just downloaded 6.17 and logged in on 6.17 6.31 & hydrairc all at the same time. both mircs have disconnected.

from the hydrairc window it says (Ping timeout: 121 seconds) for both of them, if that means anything.

now i am doing a test with hydrairc, 6.17 on vista and 6.17 on xp....

drum roll...

6.17 on vista is the first to disconnect as predicted.

Thanks for your help anyway. i might be doomed to live with with hydrairc