I designed an application to make backup of your map (in fact, any folder on your computer). It is programmed in C + +, using the graphic library wxWidgets.
I do not know if this can be useful for someone ....
Well, I've did a linux version and a windows version. If you are interested, I can also make a mac version ...
Basically, you can choose to use the timer or make your copy with a button. Juste look at the screen capture ;)
Don't select the same folder for the output path...
The delay is in millisecond

Windows user
Just use backup.exe in the zip file : http://spimort.site90.com/bkManager/backup_Win.zip
Linux user (tested on Ubuntu and Debian)
Install libwxgtk2.8-0 using synaptic packet manager
Lauch backup from the zip file : http://spimort.site90.com/bkManager/backup_linux.zip
Enyoy :)
Plz, tell me if you find bugs....
Tell me if its usefull for you :)
-- spimort