After a lot of digging around on the forums I found a tip for a problem that I find very aggravating. Problem: When you plug your phone into a PC, even if you choose charge only, the SD card is shared over the USB to the PC and you cannot access it directly from the phone. This has just got to be a bug, and as an aside...anyone know if this is fixed in froyo? Workaround: If instead of charge only, you select share out as a usb drive(or whatever that option is), you can then click on the icon at the top left of the home screen that shows new alerts and current running apps and select that same option again. The same screen comes up and you can then change it back to charge only. When you do this, the SD card is unshared and can be used normally on the phone. Hope this helps!