Have just got my self a 32gb SDHC card (Class 2). Decided to go for a Sandisk as I have used them in the past and wanted a decent brand. At first Windows Vista didn't recognise the card so tried XP & was fine so formatted it (FAT32) dropped some MP3's in put it in the car and it said "Data Corrupt"!
I found an old SD card at home so put the same MP3's on it and it worked fine!
In the user manual it says SD, SDHC and MMC up to 32gb will work. It does however say that class 4 and above works best/faster, is it because I have class 2 or is it just that is does not support 32gb?