Motorola Droid — unknown reason
created on Jan 16, 2011 9:13:17 PM (via AndroidPIT app)
created on Jan 17, 2011 4:40:04 PM
there are a couple threads on other websites discussing the same problem. It seems to have something to do with the SD card, but I'm not 100% sure.
One of the most popular fixes is to unmount the SD card, install the apps, then remount the SD card.