Cannot Subscribe to One Particular Thread !

For some reason I can't subscribe to the following thread:
http://priuschat.com/forums/gen-ii-prius-fuel-economy/38590-highway-driving-in-prius-ii.html

When I click on subscribe the page goes to a completely white page and says it's done loading but nothing happened. I've had this happen before with pages on various sites and usually if I hit back and click on the link again it loads no problem. But this keeps happening, even now days later.

I deleted a bunch of bookmarks in case I was at the limit, still no good.
I just subscribed to another thread as a test and it worked fine.

Is there something weird with that thread?

 

I'll see your odd and I'll raise you a wow.

I just tried now and it worked. I guess I can now delete my workaround subscription to this thread.

Thanks!