I had about 10 forum windows opened at the same time,can it be the reason?
Aha - the culprit found - Fluffy bear crashed the forum. Sorry, just joking - don't worry, I always do a similar thing myself. Although
the phpbb site recommends against this on their own site, it's just a natural way that I and others surf, so don't fear too much, and please don't feel that you need to change your surfing habits here at BaO. Basically, although I've not gone through the server logs with a fine tooth comb yet, I think much of the problem appears to be a question of server load and concurrent database connections. There's a small adjustment I'll be doing tonight to one of my own scripts which may help a little. In due course I intend to move the forum to a hugely more powerful server, so the problems won't be forever. Meanwhile I'll be trying to keep an eye on things here to try to minimise any downtime.