The thing about this is that I have mIRC running fine on my XP3000 rig and on my laptop, so there is not a problem with the network or connectivity and I have clearly aimed to apply the same, or similar configuration etc to my AMD64 rig. But on my AMD64 mIRC refuses to connect to any server - I have attached a screenie that shows a couple and one that is (I think) no longer there for comparison... This one has Lord stumped too BTW and he has said he hit this before and just left things to come back of their own accord - I do not really buy into that one, I know problems sometimes fix themselves with a reboot (which has been tried) but not just by the passage of time unless there is something that has to time out. Anyone out there got any ideas for resolution? Or troubleshooting to find the cause? Or maybe I should try an alternative client - but I think I'd rather stick with mIRC across them all - don;t want to get like xBased and keep dropping in and out and forgetting what client I am on!