I installed Sapphire 0.8.4 last night from a rooted version of 2.2 and it went very smoothly. I am highly impressed with the snappy-ness of the rom in general and still learning about the features. I thought I read somewhere that Titanium Backup (and other similar apps) can cause issues with the rom but now I can't find it again naturally. Does this mean there is no way to backup apps before installing a new version of sapphire? On a side note, I had a backup of apps made with mybackup but never used actually restored them... however after booting the phone up into sapphire for the first time I got a notification that 38 apps were restored. Does the google market have its own backup method? I am hoping them being restored didn't screw up something.