I have experienced several issues with my SD card I have not seen addressed here. This all happened after I got the GB update and have no idea if it is related. I noticed that I would delete pictures (stored on the card) using the stock app, Gallery. When I go back to the Gallery and look the pictures are still there. In order to permanently delete them I now have to use something like Astro and delete them. After the update I was moving a few apps from internal to SD using Manage Applications. The next day I tried to use one of them and noticed the icon was the greyed out green android generic icon. I started looking and the icons on SD tab showed the apps, gave the choice to move to phone, but would not allow the move. The apps that were on the SD prior to the update were fine, only the new ones would not function. I called Verizon and they had not heard this issue before and suggested formatting the SD and starting over and said they really don't think the SD card is for anything but pictures, music and other media. I did remind them about the picture issue but that resulted in a "let us know after you format the SD if it is still an issue". I finally resolved the issue with the apps by deleting what was there, re downloaded the apps, went into the Manage Applications and using the options under the SD Card tab was able to move the apps to the SD. They work now. I have no idea why it didn't work before but I moved them from the All Apps tab rather than the SD tab. Just plain odd. However, the pictures issue still exists but easier to resolve than reformatting. In fairness, this is the first time the Verizon folks were not able to help me.