Installed SL, speed?? not sure about that - I'm finding a lot of applications are slower loading eg. Pages - but maybe that was just the first loading since upgrade.

Disappointingly - my laser printer no longer works, Fuji say that have no knowledge of new drivers being released for 10.6 pretty poor stuff.

However, a recently purchased HP Photosmart C7280 does work.

I have found exactly the same thing with a Kyocera C5015N and also a Canon MF4350D

I upgraded my MBPro and MBAir to SL and neither will print out of SL

Specific drivers will apparently be available in 2 to 4 weeks from the manufacturers whereas Apple's drivers whilst supposed to work actually don't; and even tho Mac recognises the printers and adds them, when attempting to print I get an error message that is something like ' printer software incorrectly installed; please refer to manufacturer'

a call to Apple tech support had me attempting to update drivers via SW Update but that yielded nothing and the tech guy admitted that it's be a wait until Canon and Kyocera came to the party.
He also admitted that many are calling about similar printing issues, spinning beach balls and crashes.

so I've taken the Air back to 10.5.8 (and it's sure is nice and snappy after an erase and fresh install!) left the MBPro with SL and any printing I simply transfer to the Air and print from there.

sounds like bullsh*t to me Apple, that you would allow this to happen to Mac faithful in your haste to be first cab off the rank.

roll on 10.6.1 and manufacturer specific drivers.

as a footnote - I did manage to use the Gutenberg drivers to get the C5015N printing but it'd only yield Mono and not color.
and oddly my old FS920 Kyocera prints fine under SL as long as there's a direct USB cable connection and not via Bonjour