Unfortunate possessor of windows vista premium, I decided not changed pc, but to change windows! and there my surprise was total! my core 2 duo 6600 regained life, all my peripherals perfectly walk while some choked on Vista.
My PC is a monster stability: within 2 months of use, not a single error message.
My conclusion: If your PC within 2 or 3 years: not hestitez, go to Seven!