I havn't had any issues with DBox.
When Ggle Drive was launched, I tried it out of excitement and was so disappointed. I only lasted 2 weeks. first thing I didn't like was that I couldn't store mp3s or exe...i don't know why. then their terms of service. then their Google docs integration, then their ugly boring look and feel. I have since settled for both DBox (free) and MS Skydrive (i pay $20 a yr)
And just to show you how reliable these 2 are, I now operate almost 100% "in the cloud", I don't have a hard drive any more, the flash I have is just for music in my car!!! I decided to go "clouding" after my 1TB HDD crashed while I was in Malawi. I lost so much stuff, I was almost admitted in hospital!!