I can visualize the BSOD on final....
ATC: Bugsmasher 1234 turn left to 240, intercept the final approach course, you are cleared the GPS27 approach
BS1234: Ahhh, we gotta a problem here.
ATC: Say again
BS1234: Hold on I am rebooting, just gotta an automatic update from M$ and need to reboot the GPS, give me 5 more minutes