Hello... I had this problem before (back in late January 2011) and a good friend in the forums "Akazabam" spent a RIDICULOUS amount of time helping me with various steps to wipe certain portions of my phone and/or using nandroid backups to get me back up and running. Using parts of some suggestions and parts of others, I was able to restore my phone to working order again, however, we were NEVER able to figure out quite WHY this issue is happening and, at this point, happening again I was hoping SOMEONE might have any answer so that I could not only understand the problem but could possible avoid this from happening in the future. So here's my problem... For some reason, my phone will stop loading / mounting / propagating the apps that are installed on my SD card. Any apps that I have on my SD card are unaccessible, will not launch and therefore cannot be used; anything installed on the internal memory of my phone can be launched. Another result of this problem is that, although it normally could, my computer will no longer mount my SD card through the phone USB to computer connection. It is as if there is NO communication between the phone and the SD card. I do know FOR SURE that the data on the card is there and has not been lost. I AM able to access the SD card wireless through an app such as SwiFTP so that I can access the card via FTP. Like I said, for some reason, the phone just stops communicating with the card, will not load or permit access / launching of the apps on the card. While I cannot access the apps on the phone, I CAN still write certain data to the phone (e.g., I can "backup to SD" certain information from apps that will launch). I also have NO PROBLEM accessing my pictures via the gallery. I can also take pictures and video and those file are written to the card with NO PROBLEM. So, with my very, very limited technical understanding, it appears that the phone to SD communication problem involves the APPS on the card. I am not EXACTLY sure if the following circumstance is a coincidence or might have something to do with my problem but the phone's failure to mount and make accessible apps on the SD card seems to sometimes correspond with a "low memory" on my phone, either the phone's internal memory or the memory on my SD card. I often hit the "10%-ish" memory remaining on my phone, corresponding to about 45-47MB of free space left to install apps. I also seem to run into problems if the available space on my 16GB SD card hovers around or goes below 6GB of free space. Usually all I have to do is uninstall or Titanium Backup/Archive apps to free up some space, get a few MB or more above that 10% remaining memory level and I'm good to go. But The BIG PROBLEM is when I actually find that the apps on my SD card are not mounting and, by then, it is "too late." for me to do anything unless I get LUCKY and the SD card is "magically" (randomly that is) recognized by the phone after a reboot. The PROBLEM is that when the apps on the SD card are not mounting, *ANY AND ALL ABILITY TO UNINSTALL APPS DOESN'T WORK*. Again, I do NOT know the tech issues with my problem but the phone probably has to access the SD card during the uninstall process which the phone is not allowing. ANY option I use...the basic Manage Applications option or an Uninstaller app or Titanium will NOT ALLOW AN UNINSTALL and just hangs incomplete. I have been able to "fix" my problem with some LUCK in that I have used a nandroid backup, lost about 10 days of data, and restored apps. Problem NOW is that I fear that my nandroid backups may very well have backed up the CORRUPTION/ISSUES causing the current problem with my phone. Also, MOST IMPORTANTLY, I am trying to figure out **WHY** this problem is happening to work around or avoid in the future?? So, is there a problem with my card?? Is my android_secure directory corrupted?? Is this an internal/external-sd card memory issue?? Some other problem?? I MUST be honest...I HAVE force-moved a few apps from internal memory to SD card but LATELY the move had NOT caused the SD card app mounting problems. In the past I have FROZEN some bloatware Spring crAPPS such as Nascar and Football to keep them from loading but I have recently UNINSTALLED A FEW BLOATWARE APPS (after a nandroid backup!) to free us some memory. Again, the uninstallation of this bloatware has NOT directly/immediately resulted in the problem I have with my SD card. So, has this happened to anyone else?? What has been your fix?? Anyone know WHY this happens?? THANK YOU for your time!!!