not enough space problem while upgrading N900

I've write before about the new minor update N900 had here
I tried to install it, and i always have a problem regarding not enough space on device
here is what i did to make it work
1- reboot the device from the shell (open shell, run root, run reboot)
2- removed unused widgets
3- disabled the extra, and testing repository from the application manager

after that i could update the device
i did not see any new addition
also i think that point 3 is the solution

hope to hear from you all if you have problem and how you solved it

Minor Firmware Update (3.2010.02-8) For Nokia N900 Now Available!

The Nokia N900 received an update Tuesday morning to version 3.2010.02-8.
The software update is available through the app manager so go ahead and check your N900.

here is the Original post in maemo freak