WIN7 Prof. is crashing if I try to open a text file over the LAN

hi

I have Windows 7 Prof. 64-bit SP1 with all updates.
Quite often it's crashing if I try to open a text file over the LAN (mapping a drive from a SAN).
I cannot close it using Task Manager and cannot do anything, it seems Windows Explorer is crashing completely.
If I try to Shutdown or Restart, then Windows 7 hangs with "Logging Off" portion of the shutdown sequence. It will sit there with the "Logging Off" message on the screen indefinitely. I cannot start Task Manager or do anything else at that point except a hard shut down.

BTW that's really strange and I had this problem with other Windows 7 machines (different hardware) in the past.
The sfc command did not find any problems.

See if you can spot the problem with VEW (event viewer tool)

Download VEW by Vino Rosso http://images.malwareremoval.com/vino/VEW.exe
and save it to your desktop

Double click it to start it Note: If running Windows Vista or Windows 7 you will need to right click the file and select Run as administrator and click Continue or Allow at the User Account Control Prompt.

Click the check boxes next to Application and System located under Select log to query on the upper left
Under Select type to list on the right click the boxes next to Error and Warning Note: If running Windows Vista or Windows 7 also click the box next to Critical (not XP).

Under Number or date of events select Number of events and type 20 in the box next to 1 to 20 and click Run

Once it finishes it will display a log file in notepad
Please copy and paste its entire contents into your next reply