When I try to install .NET Framework 1.1 SP1 from either Windows Update or
from the download file, I get the following error:  

SL1.tmp - Common Language Runtime Debugging Services : Application has
generated an exception that could not be handled.

Process id=0x92c (2348), Thread id=0x930 (2352).

I have tried removing .NET Framework 1.1 and re-installing (which works fine
- MS Article 824643, How to troubleshoot Microsoft .NET Framework 1.1
installation issues).  I have checked the security configuration in the .NET
Configuration tool.  I have turned off virtually every service on the
computer, including Web Services, IIS Admin and SMTP.  There is no virus
scanner or other abnormal background processes running.   We have this
machine pretty well locked down as it is the production server for our
Internet application (ASP and ASP.NET, VB and VB.NET middle-tier, and SQL
Server backend on another server).  I attached the list of running processes
below .  

Any help, suggestions or ideas would be greatly appreciated.

Thanks,
Ken Dawson

smss.exe    c:\winnt\system32\smss.exe
csrss.exe    Not Available   
winlogon.exe    c:\winnt\system32\winlogon.exe   
services.exe    c:\winnt\system32\services.exe   
lsass.exe    c:\winnt\system32\lsass.exe   
netdde.exe    c:\winnt\system32\netdde.exe   
llssrv.exe    c:\winnt\system32\llssrv.exe   
svchost.exe    c:\winnt\system32\svchost.exe   
smc.exe    c:\winnt\system32\smc.exe   
vxsvc.exe    c:\program files\dell\openmanage\array manager\vxsvc.exe   
mdm.exe    c:\program files\common files\microsoft shared\vs7debug\mdm.exe
mr2kserv.exe    c:\program files\dell\openmanage\array manager\mr2kserv.exe   
msdtc.exe    c:\winnt\system32\msdtc.exe   
inetinfo.exe    c:\winnt\system32\inetsrv\inetinfo.exe   
mqsvc.exe    c:\winnt\system32\mqsvc.exe   
explorer.exe    c:\winnt\explorer.exe