To reduce the amount of SPAM being seen by my wife and myself, I have been using GreyListing / SpamAssassin on our personal domain for several months. So far this combination has been very effective for us. This combination is stopping over 99% of spam (up to 99.8%).
I recently had to replace the hard drive on my laptop as the existing one started to develop bad blocks.
According to badblocks, there were about 100 bad blocks in /home/, so I got onto the phone to Mr Dell for a replacement. A couple of days later a replacement drive arrived. Now to copy all the data across from the existing drive.
Luckily I have an external USB HDD enclosure, so I can have both drives connected to the laptop simultaineously. I booted from a Knoppix CD to do this.