OK. Vista threatened to "stop working" after I doubled my RAM from 1GB to 2GB. "OK then no worries, I'll just use the automated phone system" I thought to myself.
"Please dial the code on the screen..."
I enter all the numbers as instructed...
Phone's response: "This copy of Windows is already activated on another computer, if you believe this is in error please press one to talk to a representative."
Presses 1...
"Beep beep, beep beep, beep beep, beep beep, beep beep, beep beep, beep beep, beep bee... silence."
Hmm, no answer. Great service there, guys... hello..?

Try again two days later, same deal. "Windows will stop working TODAY, if you don't activate".
I remove one stick (1GB) of DDR RAM...
"Windows is activated"

Now did I waste my money on the RAM or Vista?
Oh yeah, I added an extra hard drive a few weeks earlier, what am I supposed to do if I'm running out of space and need slightly better performance?