I have loaded my 4 GB FAT32 sdcard almost entirely with mp3 files. Now, I cannot remove none of them because "discovering items" never ends. Even command line tools last forever, including format e:. I had to cancel the format after 24 hours of waiting (sdcard reader was blinking) but the card is still readable and all files are at the place as if there was no attempt to format it.
Is such behavior expected? What is the limiting factor of sdcard performance and how do I improve it?