Strange SD card problem, but then maybe it's me to blame

The tiny trigger at the door of the battery comparment was acting up again, made my PDA halt once in a while. I spent some time last night to use some Scotch tape to pad the nod and it seems to be working OK now. But then I don't know how long it will survive.

And the timing couldn't be worse for this system halt happening yesterday when I was testing the newly brought KingMax 2Gb SD card. It halt the machine during the middle of copying some files from CF card to SD card, and thus corrupted one MP3 file. In fact this COULD be the reason why today when I was listening a bunch of random shuffled songs using iMusic Player on my Pocket PC, the system suddenly halted. And when I turned it back on, it was not the battery compartment lit problem. The software complain that the file no long exist. In fact, even the file system failed to recognize the card. I have to eject and reinsert the card again to make the system recognize the card.

Now I am still not sure if it's the problem of the card, or just a software issue when iMusic Player saw a corrupted file. I'll continue stress testing the gear with the iMusic Player and see how goes.