Windows 7 Upgrade

I just did a windows 7 upgrade on a new gateway laptop (upgraded from vista).  after the upgrade I did an upgrade on my nis 2010 that came loaded on the pc.  my issue is that i have two other pc's on my wireless network running vista and xp.  prior to the windows 7 upgrade my dsl speed on all 3 pc's was 6 M download and 1.5 M upload.  after the upgrade to windows 7, my speed dropped through the floor on the upgraded pc (45-82 K).  the other pc's continue to run fine.  after getting upgrade to the nis 2010 for the windows 7 (64 bit).....my upload is back to 1.5 M but the download is still running in the 45 K range.

 

anyone else having this problem?  any suggestions are appreciated.