I have some solutions on my site http://sites.google.com/site/sebastianbod/road-to-reality-solutions. I tried to post the combined file here, but had some problems.

I am going away for a month, so won't be able to do more till mid July.

Sebastian

Thanks for those solutions Sebastian. I was looking at your website and noticed that you had a link to the sorted solutions.
That link is now out of date and is not being updated. The new link can be found on this forum.
I also noticed that you were looking for a shorter solution to Ex 8.4. If you look on the forum and also on the NEW sorted solutions site you will see that I posted such a solution.
Vasco

PS If you would like me to, I can put a link to your file, with all your solutions, on the new sorted solutions site. Let me know what you think.