Welcome to the club,
I too have seen this problem and have also come across
many users...

Looks like microsoft does not have afix to this till date

Warm Regards,
Cedric
>-----Original Message-----
>recently installed XP with sp1. multiple drive letters
>are mapped via a logon script in GPO. The drives map
>fine, but over time completely disappear. Nothing found
>in technet. Nothing in event logs.
>Josh
>.
>