I noticed that I cannot delete the local copy of a file that I have attached and sent with OSX Mail until after I close the Mail application. This started after I installed the latest security updates for 10.3.5 (Security Update 2004-09-07 and 2004-09-16). OSX give me "cannot empty trash, file is in use" until I close Mail. After closing the Mail application, I am able to empty the trash no problem. Anyone else experience this after the updates?