Folder closes immediately upon clicking..

This is a new one, and quite aggravating. I'm not sure where the appropriate subgroup for this, so I may post it twice.
I bought two new Sandisk Extreme III cards, 4 gigs each. I tested them, and they seemed to work fine. After shooting a wedding,
I doubled clicked on one of the cards to open it, and the folder immediately closes. I also loaded the files via Image Ingester,
and whenever I click on those files, the folder closes immediately. 7 out of 10 times when I try and access the files (somehow they
made it to the computer), Bridge will close. I have repaired permissions, re-started, everything except Disk Warrior. At some point
some of the file names became garbled when Bridge tried to open the folder, so I used Photo Rescue. Even those files saved from
Photo Rescue will close the folder immediately when clicked on. Any ideas with this? (Using a Canon 5D, 20D, Mac Pro - 7 gigs RAM, CS3, Image Ingester).
Will also post to Bridge topic as well. Brian