I am having the same problems.

I do NOT have more than a max of 20-30 e-mails in my INBOX - the rest is put into Folders.

It takes up to 20 secs to open my Mail for Exchange account - this is really annoying. Especially since the iPhone and my old N97 with Roadsync does it in less than 2-3 secs.

This actually keeps me from using it too much when I am at work

Furthemore it does not allow me to accept/reject Meetings in Mail for Exchange - it just comes in as a regular e-mail.

Pls fix these issues so I can get to use it at work too