Windows 7: Bug in Explorer? Networking with older OS

issue 2 of 2.. Issue 1 is in different thread.

This has to do with Windows 7 locking the sources, and not releasing them, unless you logout off the user that accessed them.

If you have a solution great. If you see this as a bug, how do you report bugs?

So I now have 2 Windows 7 OS, and 2 XP.. One has not yet been updated, the other is too old to update.

When finishing one Windows 7 installation I made sure it could access the D: drive of the main computer of the network. Then got out of explorer.

When I went to look at the D: drive of the main computer thru my XP Machine with explorer, Explorer stated it couldn't access the D: drive because someone else had it locked.. The whole Drive!!! I had to log the user of the newly installed Windows 7 computer off because just being out of Explorer (for a few hours, between events) was not good enough.

Quite uncannily, the exact same advice holds for this issue as well as your other (UFO file) symptom:

Try to temporarily uninstall filter drivers, as a test. In particular, your anti-virus solution. You should start off with the Windows 7 box, then the XP machine which declared that its resource was "locked".