For some reason, sometimes when I boot up my phone, I'm unable to use the apps that are on my sdcard (froyo no root). It's not that my sdcard doesn't work, because I'm still able to listen to music. It also happens most of the time I connected my phone to my pc and then reconnect it. I sometimes also can't unmount the sdcard. Is there a way to fix this? PS this happened before and I tried factory restoring the phone and reformating the sdcard. It seemed to work for a while, but now the problem has returned.