Same here, mine has 3 months to go and I alerted them yesterday to not consider my subscription continued, it will not be.
I don’t use Carbonite and neither does my family, but they’ve had computer issues now and then, so was looking around yesterday for some alternatives and found the below
For Windows users, here’s info on backing up files (I wasn’t sure about the process, but you might be):
http://www.microsoft.com/athome/setup/backupdata.aspx?WT.rss_f=At%20Home%20RSS&WT.rss_a=How%20to%20back%20up%20files%20and%20recover%20data&WT.rss_ev=a
Microsoft also has a free online storage and sharing called SkyDrive:
http://explore.live.com/skydrive
Flash drives are so inexpensive these days, that’s always an easy alternative.