I just bought yesterday a new PS3 320GB, upgraded to firmware 3.55 and then installed Kmeaw 3.55 firmware. Got GM and MM installed.
As I then wanted to play Uncharted 2 from original disk it had to install software update. That took about 30 min. Then I installed other games like Hard Rain and that took min 40min up an hour.
My HDD isn't that full yet so I am wondering what is wrong