Mac 10.6.6 appears to be corrupting Windows network storage folder security

I am have a randomly occuring issue where Mac users appear to be corrupting Windows Server shared folder security. Users have called reporting they are unable to open, rename or delete folders that they have either created or previous worked in. When I check this on the Windows server, primarily the security tab is blank. From this point I have been able to set myself as owner and turn on inheritance to get security back to the folder.

Complaints seem to be limited to OS X 10.6.6 users
Users have called about Windows file shares on both Server 2008 and Server 2003 machines
Users log into their Mac machines via an AD account
Mac's are joined to the AD domain
Users have been known to connect via SMB and AFP
Users have been known to connect via IP address and Server name

I have contacted Apple support and they were unaware of this problem. The desktop support rep I spoke with passed along my problem to enterprise support to see if they could help before opening a case and he said he was told that the extent of enteprise support was in binding a Mac to AD...which is not a problem.

My first recollection of users calling about this problem was when we purchased a round of Mac Pro's in August. Prior to this our users were running 10.4 or 10.5. All the new Mac's are running 10.6, but it does not appear to be a Snow Leopard issue across all versions, as we have some users still running 10.6.4 and I am unaware of them experiencing this problem.

Looking for some assistance on this.

I have also posted this on the apple forums... http://discussions.apple.com/message.jspa?messageID=13163820#13163820

thanks,