I do use the desktop manager sometimes, and i do have the install CD that came with my NVidia Graphics card, and i wouldn't have expected it to be that either, though i wouldn't have expected any of the other attempts to fix it to have been the cause of the problem either.
As for the change of profile it avoids the problem by abandoning it by deleting the profile that it contains, and doesn't address the cause of the problem, and if that cause is nview desktop manager then it would still be on the system and in the same condition, so the problem could easily arise again on any new profile that was created. The problem hasn't always been there on this account either and it came it went seemingly at random, and it stopped happening for a few weeks/months after i disabled the onboard network and installed the NIC, as mentioned in an earlier post.
The option of reinstalling Windows was more to give a freshness back to the system, as there are still leftover files from uninstalled programs around, some of which are in "C:\Documents and Settings\Old_Username folder, where C is the drive on which Windows XP is installed, and Old_Username is the name of the profile", and i have been thinking of doing a bit of a shift to the file storage anyway, and possibly uninstalling some more software too, but haven't decided for sure yet.
Two more boots without any problems as well by the way, so that's five consecutive boots now with no strip visible.