Hello all - new to the forum.
Just installed 4.5 - no problems - lovely!
Additionally,
I have been fighting the dreaded 'flashing red light 3-2 'problem for the last week. I managed to get my blackberry back to life by removing the battery and reinserting LOADS.
I immediately plugged it in and installed 4.5 - No more 3-2 hang issue and the new OS is splendid.
enjoy