64 Bit Explorer.exe causing high CPU

During testing of a 64 bit Windows 2003 build with Appsense v8 environment manager i encountered the following problem.

Explorer.exe was constantly using around 10% CPU randomly for users for no apparent reason.

Iexplore.exe was constantly consuming 10% CPU for around 10% of connected users to the server.

The problem was with the appsense device manager hooks. (lockdownmgr.dll) Disabling Appsense agent prevented the problem occuring on new logons. We then removed the Appsense lockdown controls on explorer.exe and could start the appsense service again. In this instance we were using appsense v8, I repeated the test on Appsense v7 and the problem did not show.
I have a called logged with Appsense support for the bug with v8.

I had heard of problems with the lockdownmgr.dll in v7 of the application as well. Best advise is to rename the DLL if you are not using the lockdown component of the suite. This prevent appsense from even trying to use the hooks.