Current versions of Linux (Ubuntu 11.04 etc) use 2.6.37, though.
All integrated sound solutions have open source drivers.
The only problem spot is graphics drivers.
You're more likely to run into device driver problems upgrading to Vista/7 than you are upgrading to Linux. (although there the problems are older printers and other peripherals that significantly predate Vista).
Current versions of Linux (Ubuntu 11.04 etc) use 2.6.37, though.
All integrated sound solutions have open source drivers.
The only problem spot is graphics drivers.
You're more likely to run into device driver problems upgrading to Vista/7 than you are upgrading to Linux. (although there the problems are older printers and other peripherals that significantly predate Vista).