When I run Disk Cleanup (cleanmgr.exe) on my work PC (running WinXP), it claims to see
778,520 K of WebClient/Publisher Temporary Files

Although I do check that field, the number never drops.

I've manually scanned through all possible temp folders on the drive and don't see anyplace hiding 760 MB of temp files, which makes me wonder whether those files merely exist in some list (registry or INI) somewhere but don't actually exist on the drive.

So, my questions are:
1. Where on the drive might those WebClient/Publisher Temporary Files be
2. Where does cleanmgr.exe look to determine how much disk space is used by WebClient/Publisher Temporary Files

Thanks in advance.