Well tonight has finally convinced me that I need to get an external storage solution. My computer crashed and I ended up losing 300 gb of data. I am currently trying to recover it but who knows how much will be recoverable. I stopped using the drive as soon as I noticed that the data was missing. That may have been my saving grace. I'm really pissed off at myself for not backing up on a regular basis and now I am paying the price by losing photos and documents that took me years to collect.
Yes, happened to me many times. I ended up investing in a DVD writer supporting those 9GB discs so now I do a monthly backup on a few discs.