Yes,Network Stored PST files suck. Big-time.
The Server Performance team explains why PST archives are a Bad Idea ™ in a very good article.
Included are the perfmon counters you can use to detect if your performance issues early in the morning are attributable to those pesky pst files.
Inherited Permissions and moving Folders don’t mix.
You know the reACL mayhem that ensues when your datashares are ACLled with different groups on different folders..
When you (accidentally) move a folder into another one with different security, the inherited permissions don’t apply. This tends to happen frequently when users drag ‘n drop a folder in the wrong place and lose sight or can’t seem to remember that ctrl+z is Undo.
Here’s why.
http://support.microsoft.com/kb/320246/en-us