SD Card keeps getting unmounted on my HTC Desire The SD card in my HTC Desire keeps getting unmounted every now and then and it's very annoying. From what I'm seeing, the SD card is removed only when some kind of multi-tasking with the files on it happens.

Example - Listening to a song that's stored on the SD + Using an app that's stored on the SD. 

I haven't rooted my phone and don't intend on doing it. The phone is currently on the official Android 2.3.3 build. 

I've tried another SD card but the problem still persists.

It's still under warranty, but I thought I can fix it myself with some help from you guys. :)
I had a problem with cheap sd cards from ebay doing this, I spend a little more these days on them.

There isn't much you can do here if you don't intend on rooting the phone or anything. If it was mine I would wipe the thing and re-install a fresh stable rom and test that for a few days.