I second the DropBox option... I use SVN as well, but by just putting my projects folders in my DropBox folder, it's automatically backed up... and synced to any other computers I like too... this of course puts it securely on a 3rd party (ie DropBox's) servers, but I don't think that's anything to worry about for the awesomeness of the service.... 2Gb for free... You can get it at DropBox.com, or, if you do decide to sign up, if you click this affiliate link, you'll get an extra 250 meg's of storage when you signup (and I will too)
https://www.dropbox.com/referrals/NTI3NDkyMjk
There's an iPhone app too, so you can download any files you put in your DropBox straight to your iPhone.... I edit my "todo"s in VIM on my mac, and they happen to be in my DropBox.... Later on, I can look at my ToDo list on the iPhone without having to do anything... very nice!