Android 2.2 and IMAP message deletion

My Samsung Epic phone was just upgraded to Android 2.2. When this happened, I am unable to delete my Dreamhost e-mail messages via IMAP.

Are there any diagnostics I can gather that could help figure out why this is happening? I don’t think this affects all Android 2.2 users, or else the problem would be well known (and probably fixed).

So maybe there’s something about the way the Android client is interacting with Dreamhost’s IMAP servers…

Thanks for any ideas.