> > IMP is going crazy in first case, IE 5.x eats all ram, all cpu since imp is > in some infinite loop here, producing empty mailboxes Aha, a reproducible case. Any chance you could attach a gdb process to both of those, and get backtraces, and we can compare the differences? Also, opening a report at bugs.php.net would probably be good. If this is affecting PHP-4.0.5RC3, we should fix it real soon. Anil