I am running version 4.5.0.127 (177) on an 8830 CDMA
Platform is 3.4.0.20
I haven't come across any issues so far. My only gripe is that memory tends to go down to about 2.5 megs. Right now, the phone is at 4.2 megs
Only apps installed are Opera mini; Gmail Apps (Gmail & Google Maps)
Also, I'm on BES.
Note: Rogers is not my carrier