James,
For what it's worth, I have no experience with 7.51 but I did do an upgrade from 5.03 to 7.50 with Kix. In my experience, the 7.50 install did not uninstall 5.03 so I had to pull the uninstall key from the registry and run it. Also, I didn't use the supplied vplogon.bat choosing to do it all in kix.

In your case it would be easy to manually install on one client and see if 7.50 gets uninstalled.

I read up on what 7.51 fixed and decided to stay with 7.50 for now. I'm waiting to see what 7.52 or 7.6 has to offer.

An uninstall example:

code:

;  - check if VP5 is installed
;
$vp5uninstall = "C:\Program Files\LANDesk\VP5\vpremove.exe"
$isvp5installed = ReadValue("HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\uninstall\ldvp 5.0", "uninstallstring")
if $isvp5installed <> $vp5uninstall goto skipuninstall
endif
if @INWIN = 2
MessageBox("NOTICE!" + Chr(13) + "LANDesk Virus Protect must first be uninstalled." + Chr(13) + "System must REBOOT when complete!" + Chr(13) + "Choose Yes to uninstall and Yes to reboot" + Chr(13) + "on the two options that follow","Norton AntiVirus 7.5 Install",48,60)
RUN "C:\Program Files\LANDesk\VP5\vpremove.exe"
goto finish
endif
RUN "C:\Program Files\LANDesk\VP5\vpremove.exe"
sleep( 1 )
setfocus("Uninstall Message")
sendkeys({ENTER})
sleep( 15 )
setfocus("Uninstall Message")
sendkeys({ENTER})
endif

An install example:

code:

;emulate vplogon.bat for 32-bit clients
;
if @INWIN = 2
MessageBox("NOTICE!" + Chr(13) + "NAV silent install will run in the background." + Chr(13) + "System will REBOOT automatically when complete!","Norton AntiVirus 7.5 Install",48,60)
else
MessageBox("NAV silent install will run in the background." + Chr(13) + "You may continue working.","Norton AntiVirus 7.5 Install",48,60)
endif
USE L: /DELETE
USE L: "\\FFRAS\vplogon"
SHELL("L:\vp_LOG32 /p=L:")
_________________________
Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.