It's a known issue. The problem should occur in all of your
Office 2003 applications, not just in Excel 2003.

Jamie Furlong wrote:

Thanks! It works! Having got a load of drives including one of those 6 in
one card readers, I'd not noticed the little "n" drive remaining from when I
networked the PC to another about 6 months ago. This is the ONLY app that
behaves like this - where's the best place to report this bug? Clearly
others know about it, so no point starting another bug track!