i have the same problem so your not the only one
i tried multiple solutions none worked so far

 

I'm using a 4gb mircroSD HC.

 

Here you go:
http://img840.imageshack.us/img840/1593/cardsx.jpg

 

Is this type good? (I'll try to position everything according to the thing, but I can't get a picture at the moment)

MICRO ^
......SD 4
[.HC.]

.....4GB
CO4G TAIWAN (Small Print)

Kingston
SDC4/4GB 37 FCC T

 

Finally! All I had to do was switch memory cards, now I am using a SanSick 2gb MicroSD
Heres a picture:
http://img838.imageshack.us/img838/6295/photosi.jpg

 

Glad you got it sorted.

Spread the word.

If your having issues and the usual fixes have failed... REPLACE YOUR SD CARD!

 

General rule: The smaller the card the better the random access speed will be.

This means that if you are only using a 2GB card you have a better chance of having a budget card working well.

If you want a 4GB card to work properly you will need to be a little careful as things can be a little hit and miss at this size and you could end up wasting your money.

For 8GB and above be paranoid. I would only purchase one of about four different cards at this size. I would not want to risk my money on anything else.

Edit: DO NOT BUY A CARD MADE IN TAIWAN