Client Security Solution--and Password Manager--no longer autoruns

Question

My T61 was working wonderfully until recent installation of antispyware, antivirus programs.
Prior to that, on boot, I could always see a brief CSS splash screen, and, more importantly, Password Manager would always kick in automatically, to load password data or to ask if I wanted it to remember something.
Now, although Password Manager remains an icon in the system tray, it not only does not detect need for input, hotkeys do nothing, despite being marked enabled.
I downloaded CSS 8.1 from the website (although this was still installed), and ran the "Repair", but still no joy.
Your help is greatly appreciated.

Answer 1

Thanks again--as you suggested, a thread well worth reviewing.
In my case, I opted for the Rescue and Recovery Quick Restore--albeit with much fear and trepidation, since, unlike the roughly equivalent MS System Restore, this feature does not tell the user the date of the restore point that is being recreated.
As it turned out, this took me back to a point when Norton Internet Security was only partially removed--which created the added anxiety of (a) inability to connect to the Internet through Explorer or Outlook 2007 and (b) inability to launch any Office 2007 program!  (That last caused yet another twist, since the instructions I had previously followed to completely removed Norton were now saved as .docx files....)  Although Norton Internet Security was still present on the desktop, and ccApp.exe was obviously running (and unable to shut itself down on Restart), Add/Remove Programs (the first step in the removal process) would not work--"the module is missing."
Fortunately, I was able to download the Symantec Removal Tool through another computer onto a USB drive, copy the program to the T61, and run it there.  (Note that although Explorer would not load fully, Internet access of a sort was still available as witness System Update and Microsoft Update downloading without difficulty--though MS could not complete installing updates for Office 2007 with Norton still in the picture.  This matters because the Removal Tool accesses the net.)
Once Removal had done its thing, Explorer, Office 2007, and Password Manager again worked as before.
Sadly, I still don't know what the necessary ingredients for CSS/Password Manager are--there ought to be a listing of what files these otherwise excellent programs require.  And I'm not sure what approach to firewall, antivirus, and antispyware I ought to take, given the possibility that the programs I replaced Norton Internet Security with caused CSS/Password Manager grief.
Sigh.