we have many complaints from our employees that they get the error message "Windows Explorer stopped working" every once in a while. They can either close the error dialog or click "Restart Windows Explorer". In both ways Windows Explorer crashes (taskbar and desktop disappear) und restarts immediately.

I looked into the Event Log on some of the machines and it's always the same error:

Name der fehlerhaften Anwendung: explorer.exe, Version: 6.1.7601.17567, Zeitstempel: 0x4d672ee4
Name des fehlerhaften Moduls: NalShell.dll, Version:, Zeitstempel: 0x4e12dadf
Ausnahmecode: 0xc0000005
Fehleroffset: 0x000000000000b991
ID des fehlerhaften Prozesses: 0x13cc
Startzeit der fehlerhaften Anwendung: 0x01cc8a5462f6e088
Pfad der fehlerhaften Anwendung: C:\Windows\explorer.exe
Pfad des fehlerhaften Moduls: C:\Program Files (x86)\Novell\ZENworks\bin\NalShell.dll
Berichtskennung: eeb76e45-f647-11e0-8a0e-1cc1dec0cfb2
Our systems are running on Windows 7 Professional x64 SP1 with ZENagent 11.1 installed.

We need a fix for that please! :-/

P.S.: Sorry for the german error log but I don't have the time atm to translate it.