Bingo. I've been having the same problem and it has been driving me bonkers.
Just now I stopped Roxio's monitoring software and - presto! - the problem
went away.

This is not the first problem that Roxio has caused. It's crappy software,
IMHO.

"Inspector Gadget" wrote:

Jim thanks for your suggestions. Your earliest one was the closest to the
actual solution, which I found by reinstalling the OS and base applications.
I discovered that Roxio Easy Media Creator Suite 10 had a service that was
running in the background to monitor folders for specific media files. This
system tray utility was causing the copy paste pausing in Excel although I
don't understand why. But I do know that after turning it off, Excel would
return to the usual instantaneous copy/paste actions.