Running Low On Disk Space?
Follow the instructions in this article to free up space on your main (C:) drive. Especially run this before running CRASHPLAN, which backs up your home folder by default. The home folder also happens to contain a ton of junk in the form of temp files, temporary internet files, and other e-dust. My cleanup was way overdue and ended up recovering several GB on C: drive, which is absolutely precious for the performance of your PC.