I saw the email announcement for Cat's Hill and dutifully went to the web page. When I saw the 45+ 2/3/4 race listed I had to laugh. How many 45 year old cat 1's are there in Nor Cal? Wait, I just looked on Casey's web page and as of Feb 2006 there were NINE. NINE!! So they jury rigged the traditional open 45+ race to keep out NINE riders. The irony is that most of those NINE cat 1's would probably opt for the 35+ race anyway.
I know that this general discussion has been going on for a while and has been hashed to death, so feel free to ignore me if you want. I just had to add my two cents.