I h8 you.
Sure, I have a lot more e-mail than most folks, and I understand that performance might be affected by the quantity, and for the most part Entourage still works pretty good with 200,000+ email messages (except where it hangs for 15 minutes at a time while it is doing something once in a while), but when I actually try to do the good thing, and start deleting mailboxes full of messages, it isn’t cool for you to hang there, deleting 40 messages an hour for HOURS. So, now I gotta delete messages in small batches so as not to upset whatever delicate balance there is in your poorly written software.
I guess the Entourage software interview process doesn’t include corner cases, huh?
[Update 2.24.07- Macworld finally provided a fix]