SD slows down phone to unusable

[Guest MrHealer]

got my i600 off e-bay, and rather like it, but am having a problem when trying to add a 1gb SD card. i've done the upgrade to 2003, and every time i put in either of two 1gb SD cards, the phone becomes so slow as to be unusable. as in i press a button and the device responds 45 seconds later. i've tried formatting both cards as FAT with 16k clusters...anyone have any advice?