Since going from D30 to 20D dust has become an issue as discussed in a topic I created a week or two ago.
Well, since then I had a go with Intemos DSLR clean swabs which I didn't get on with, I found them difficult to move around the sensor and I ended up with a similar looking sensor to before hand.
I had been pointed in the direction of the Copper Hill DSLR clean tutorial and kit (Thanks Fergul et al). It looked good so I ordered a kit and it came very quickly with a nice set of instructions too.
I had a go on a mirror to make sure I got the technique right and then had a go on my sensor. It took a good few attempts to get used to making up a swab and cleaning but after 5 sweeps over my sensor (it does say new users can take 3-10 swabs to get a clean sensor so 5's not so bad for a first time ... ish
Anyhow I now have a spotless sensor at f20 and I am pretty pleased with that.
The main purpose of this post is partly because of the number of posts about how to clean sensors/deal with dust spots and also to say that cleaning the sensor really isn't some big deal, yes DSLR's are very delicate and expensive, and they are to be treated carefully. Most manufacturers say not to go anywhere near the sensor but the facts are that dust happens, it is no fun cloning tons of dust off every photo and people can't afford the time and money to keep sending the body away to get it cleaned by their manufacturer.
The Copper Hill method seems a little daunting and difficult but give it a go, be patient and follow the instructions and your sensor will be nice and clean.
Hope this helps someone and remember you are not cleaning the sensor, although that it the terminology used, you are cleaning glass over the sensor!
Copper Hill ---> http://www.pbase.com/copperhill/ccd_cleaning