Recently (last few weeks) every time I try to send an email from outside the Mail app (like email a twitter link from Osfoora or mail a link from Safari), the message sits in my Outbox and only gets sent when I go into the Outbox and release it.

I'm using Gmail, setup as Exchange on iOS 4.1 (also exhibited this behavior on 4.0.1). I don't remember this being an issue before. Any ideas?