Just curious as to what SD cards you people are using. I want to find out which seems to be good performance card I can buy.

On Tomtom 1 v1 SD dane-elec 2gb ( 30 €) and it woks well after format.

Very nice. I have Crucial Technology 2GB SD card and it works fine.

Wich speed is your SD Card?
I asked TomTom about wich speed should a new card have, and they told me anything over 66x would be ok.
They also say in the site FAQ, the faster the better.
Anyone knows which speed is the original card shipped in the Go box?
Would an high speed card improve the video playback?

Edit: I just read the video player manual and at least 20x is recomended.

I don't know the speed of my SD card but I could always bench mark it. I have had no problems with it so far.