Mail activity wheel keeps spinning!!!!

Hi, Last night i went to send an email with lots of photos so i attached them all (80mb) then knowing this was far too big to send i shut the new message window but mail had saved a draft so i thought ill delete this as well. Now the activity icon by my name in mail is constantly spinning and i have a NEW icon in mail 'on my mac' and in this is a folder called 'recovered messages' and it keeps recovering this huge email i didn't send!
Is there anyway to sort this out, My email is with sky so i can still log in to sky.com to check my mail but i want mail back working.

Please help!!

Geoff

24" intel imac 2.66 ghz 4GB ram running 10.6.5

I've found that I can get rid of it be deleting a hidden directory at:

~/Library/Mail/IMAP-<username>@[email protected]/.OfflineCache

then deleting the 'Recovered Messages' mail folder in Mail.app

Cheers