I have a G4 PB running 10.4.11 I use the Mac mail app and have two IMAP accounts that I pruned right down prior to getting my iPhone. Neither account has more than 150 messages in total. Since activating my iPhone, when I open Mail (on my Powerbook), it tries to sync one of the accounts and then within 30 seconds, will crash. If I click reopen, the same happens. It last worked before I activated my iPhone and stopped working the first time I fired it up post activation. It might be a mighty coincidence but I think its related. Anyone else suffer this fate? Any suggestions as to how to solve it? I can check both accounts using the webmail interface provided by my domain name provider (1and1.co.uk) so I know that the accounts are active and working.