I've read the posts on the issues people have been having.
I am administering a 4.0.1 BES and have several users (including myself) who have WER enabled, under Options on the handheld have Delete on Handheld and Mailbox, but when they try to delete on Mailbox, it does not delete from Handheld. Even after they wait a long time.
I have tried the posted fixes but to no avail. Any one out there got one yet?