Hello my knowledgeable, geeky friends - I have a problem. I bought one of these things - a 4GB USB flash drive - to back up my documents. If I put files on it, remove it and restart the computer, the files aren't there when I re-insert the drive. I have checked that they've been copied correctly before rebooting but, afterwards, they've disappeared. What's even stranger is that the diskspace statistics for the drive show that the files are taking up space - but, for some reason, Windows can't 'see' them. I tried to update the drivers for the drive but XP reports them as up to date. So what the hell's going on? Is it because of the high capacity? I've noticed that around 1GB of files have 'stuck' and are permanently and reliably available, but any new files I copy aren't. The drive was bought new in sealed manufacturer's packaging, so if someone's turbo-charged it to accept 4 x it's original capacity.. well, it seems like the manufacturer's to blame for this. Is this a possibility? It's a non-branded drive which I'm led to believe uses Samsung memory. Is it because of the file system (it uses Fat32 and won't let me reformat it to NTFS - worth a try, I thought)? Does anyone have much experience with these drives? I get the impression that they're very unreliable - that some brands work better with some computers than others. Can anyone recommend a reliable brand (that's available to UK users)? This particular drive will soon be winging its way back to the seller, so any advice on what brand to buy in its place would be most welcome. Any other help or info greatly appreciated. Thanks in advance.. redarmy11.