Heh, I know that one well. I've had Updates wreck my system before. Loss of internet, loss of drivers, inexplicable loss of HD space, loss of sanity...
I remember the first time I opened my laptop. I managed to get two decent-sized fluffballs from the airflow pipes, which showed me that actually, I was supposed to have been able to see into them all along instead of seeing blackness inside, and I got loads of dust from my fans. After seeing that, I always cleaned my laptops! And it was amazing to see how much of a temp difference it made.
(A handy program to have is SpeedFan, which monitors your system temp and reports if it's running too hot.)
I remember the first time I opened my laptop. I managed to get two decent-sized fluffballs from the airflow pipes, which showed me that actually, I was supposed to have been able to see into them all along instead of seeing blackness inside, and I got loads of dust from my fans. After seeing that, I always cleaned my laptops! And it was amazing to see how much of a temp difference it made.
(A handy program to have is SpeedFan, which monitors your system temp and reports if it's running too hot.)