time machine preparing back up
I use an iMac running 10.9.2 and for a bit of time now when Time Maching goes to back up the computer to the external drive, it seems to be stuck in "preparing backup" mode. As I type this it has been in that some position and does not seem to be making any progress. Any ideas on a fix would be much appreciated.
iMac (20-inch Early 2009), OS X Mavericks (10.9.2)