Been using this SD card 4GB Fat32
with my camera for a year or so.
Was OK on my laptop (XP) until recently.
Now, though the adapter (thumbsize USB) appears,
and is recognized, there is no drive on XP.
This could be a driver problem, but the drive itself doesn't
appear on a Disk tool on XP (HXD) as a physical drive.
Grub4dos (from the HDD) doesn't see the physical drive either (hd1,0) (didn't try (hd1) though) ("disk doesn't exist").
The SD card also doesn't work on Android (tablet). Well in fact it appears, but 0 (zero) files.
The SD works "perfectly" with the camera, browsing or shooting.
On a Windows 7 it works OK too.
PS, the XP computer is starting to be funny, although the SD not working on Android is strange.
Edit: on a Win7 the same laptop model as the previous Win7 test (different computer), the SD appears for 1 second as E:.