Sorcha -

If he hasn't already looked at the KB articles on the cache size assignment (03 Mar 03 - 12:00 PM ), you might print the thread - or give him the links. The symptoms described aren't identical to your description, but I found quite a few references to "the fix" (28 Feb 03 - 06:59 PM ) to the icon cache size elsewhere on the web too.

There isn't too much specific info on different "symptoms," but a lot of people seem to be having problems - similar, if not identical, to yours - that go away with this change.

John