Cleaning out the system unit / White lions

Yesterday, for the first time in my life, I opened up the system unit. I didn't find anything difficult about it, it's just that it was under warranty the whole time, and the last few months I was lazy and didn't always have the time. But I couldn't stand the processor freezes any longer, even though the temperature was 66, while before it had even reached 83. After cleaning the cooler on the processor (it took me a while to figure out how it comes off), the temperature dropped to 44 degrees, which is nice, although I understand it could be lower, and with the side panel off the temperature is about 3 degrees lower. It's a shame there's a lot of dust in the room and no decent vacuum cleaner; in half a year it'll surely get all clogged with dust again. I should also clean out the power supply, but somehow I'm fine with the state it's in. The main thing is that now the computer doesn't freeze at all, even under heavy loads.

Today I read some articles about lion mutations at http://www.messybeast.com and about the current state of white lions in the wild and canned hunting in South Africa, on the site http://www.whitelions.co.za. I wanted to get Linda Tucker's book "The Mystery of the white lions", but right now buying it through Western stores is unrealistic for me.