I ran across a problem with running updates for Microsoft Silverlight KB974331.  Since the client did not need Silverlight at this point, I wanted to uninstall it.  It would not uninstall from Add/Remove Programs - error said it could not find the package installation information. 

This tool helps with the removal of MS Silverlight:

Windows Installer Cleanup Utility

http://support.microsoft.com/kb/290301

Try resetting windows update components here:

http://support.microsoft.com/kb/971058

SN Margin (AKA Signal to Noise Margin or Signal to Noise Ratio)
Relative strength of the DSL signal to Noise ratio. 6dB is the lowest dB manufactures specify for modem to be able to synch. In some instances interleaving can help raise the noise margin to an acceptable level. The higher the number the better for this measurement.

6dB or below is bad and will experience no synch or intermittent synch problems
7dB-10dB is fair but does not leave much room for variances in conditions
11dB-20dB is good with no synch problems
20dB-28dB is excellent
29dB or above is outstanding

Line Attenuation
Measure of how much the signal has degraded between the DSLAM and the modem. Maximum signal loss recommendation is usually about 60dB. The lower the dB the better for this measurement.
20dB and below is outstanding
20dB-30dB is excellent
30dB-40dB is very good
40dB-50dB is good
50dB-60dB is poor and may experience connectivity issues
60dB or above is bad and will experience connectivity issues

My strong dislike for AT&T as a company continues to grow.  DSL is dropping sync "all of the sudden" after ATT trucks were in the neighborhood last week.  They sent "Your Company's Computer Guy" (who happens to have 8TB of movies -over 1200 of them - on his home server blah blah blah) to diagnose.  He said it was a short in the line.  Disconnected one of my jacks in the house.  Said it was fixed and if it happens again, replace the modem (You can buy one at our local ATT stores!).  Had a new modem in my box of goodies and replaced it.  Same problem (of course).  He also argued with me on who my ISP was.  "We serve your DSL" "No, you don't! I wouldn't have ATT if you paid me" "Well it shows here we do" "Look again" "Oh - you're right"  DUH.  I guess the carnival season is coming to a close and the carnies are working for ATT now!  So, here I sit, trying to work remotely on client computers to earn a living and I get interupted randomly every 1-15 minutes.  What a joke.  I think the term "going postal" could soon turn into "going telco"