50-75% of the time I don't get on the first time (sometimes just reloading gets me here). Sometimes it helps if I delete cookies, sometimes not. I usually try, then google it, then try typing different numbers into the link, then give up and try later.
This is on my home computer, my laptop, and my iPhone. This is also at many different physical locations for my laptop or cell. I wouldn't doubt that after I post this it will go to not found or whatever other message it gives. This is using IE and Safari. First few times I thought the site was gone for a second, now I just keep trying or hit one of the other forums for awhile. This is the only site I encounter this ever though out of 30+ automotive/GP forums (big and small), so I'm not sure.
EDIT: Yep, as soon as I posted I was unable to continue until I completely got off the internet and logged back on, but fine now for the time being.