Stored passwords in xp

Had an interesting problem today with a user who suddenly couldn't connect to one of the servers on the network. It turns out they had recently changed their password and had previously managed to save the password in XP. Following the instructions I was able to remove the stored passwords from the machine and when they next logged on all the network drives were connected ok. I managed to get to this point by following the trail from eventid 14 in the system logs with a source id of kerberos and looking this up at eventid.net and then following the link to the stored passwords page.
I must say this is the first time I've ever seen this problem and it had me baffled for a while.
"rundll32.exe keymgr.dll,KRShowKeyMgr" will allow you to delete the obsolete entry.