Thanks for all the posts on this topic. I have not resolved it yet, but then I have not been able to uninstall all six of the Microsoft Updates that were installed between the last successful use of these two Cruzers and the time they failed. I was able to retrieve the list of updates though Dell's "Help & Support" utility, but that is only a listing. Add/Remove does NOT have all 6 of the updates listed; it especially does not list the 4 WinXP updates. I uninstalled the other two, but the Cruzer still does not connect. If I get a chance this week, I am going to uninstall SP3 and see if that "fixes" the problem (these Cruzers worked after SP3 was installed). I will them do a manual update and add back those 4 updates one at a time to see which one is killing the Cruzer.
Just for clarification, I have an older, non-U3, 2 GB Sandisk Cruser that works fine. I also have two 1 GB PNY drives that work fine.
Thanks again everyone. I will report back what happens. I've fallen behind because Comcast IS "provider??" was down here for a few days!!!
JDDomine 20080630