While I'm not sure if this is the correct place for this question, here goes: About 10 minutes ago, while trying to copy some music from a (windows) desktop onto a Sandisk 'Cruzer Micro' 4GB USB key an error came up saying that there wasn't sufficient space available. When looking at the properties there is apparently 3.72 GB used (capacity 3.74GB) (and this was double-checked using my macbook). Now the problem is - there is no way that there is that much stuff on the USB key. When everything on the drive was copied to my macbook, the total size was only just above 100MB. Now, the question is, where has the rest (over 3.5GB) of the 'space' gone? Has this happened to anyone else? Any suggestions? The USB key is around half a year old and was working perfectly fine two weeks ago (the last time I used it). Any help would be appreciated. Thanks.