Service host (was that the correct name?) crashes at least once a week. Service host suddenly takes 90%+ of cpu. Start bar hiding behind windows. Sleep randomly causes hibernate or reboot instead. Network doesn't work properly after resuming the system (take cable out, plug in again - works). System update hangs forever. Copy anything formatted + paste into outlook -> rarely causes whole machine to freeze for ~2min. Wifi direct popup shows up again after closing. Changing location of a network printer (same printer, just moved) requires downloading its drivers again (ubuntu has them by default). Bluetooth just doesn't connect with Galaxy S2 (no problems under ubuntu). I could go on...
And that's a proper laptop with a clean system, part of an AD, running only outlook the whole day.
On the other hand ubuntu natty used at the same time as the main machine, usually handling heavy development, testing and a number of VMs didn't surprise me once.
