Old topic, but wanted to post a solution. It has lasted 21 hours; for this phone is good! Was having SD problems, even to apps not installing or installing. Spoke to.very helpful HTC rep yesterday. Deleted all all files saved from app saver apps, using Astro File Manager, put in a different SD card, uninstalled those apps. Voila, so far so good. Liked the apps, but not the problems they may have caused.
Sent from my Thunderbolt