On 24.9.2010, at 23.05, Mike Abbott wrote: >> What about just: >> >> imaptest clients=10 user=user1 pass=test no_tracking logout=0 copybox=Copies > > No crashes this way. It seems to need the different users. Oh, interesting.. What about if you run it with two users? Like: imaptest user=user1 etc. & imaptest user=user2 etc.