Serious showstopper for me in Office 2010.
With IMAP the default works differently to 2007 - in 2007 deleted items just have a line through them until you PURGE the items.
In 2010 the purge item on the menu doesn't exist so the default DELETES the items.
If you opt for "Mark items as deleted but do not move" it still won't put a line through the deleted items and moves the items to the "deleted" folder where you can delete them.
However while that is NOT what I want its better than nothing.
BUT the NEXT time you open outlook 2010 and delete mail it reverts back to deleting mail again without even moving it to the delete folder.
Now I like the other programs such as EXCEL 2010 etc etc -- but I NEED outlook to work in the way it did in versions 2003/2007 otherwise its a NO GO for our work.
So relucantly I've re-installed office 2007 on a work laptop computer until this is sorted out again.
I've double checked the delete options and I have them set correctly.