I would recommend switching to LeeDrOiD. I did a while back and see no reason to switch back. It's as fast as MCR was and has been incredibly stable for me (I haven't restarted my phone in over a month).
so you are saying that you don't even have problems with your browser when you are surfing for a long time, even using pages which include flash? This is strange as I have also switched to LeeDroid and am experiencing the same problems I have described above with the ROM FR9 and FR11 from this site.