Sorry to hear that, admittedly the .rpms had little testing. I need to learn some things before I can get invloved in updating them myself.
The rpms also have an older version of mojoPortal. I'm able to run the latest 22.214.171.124 mojoportal mono build from our download page on mono 1.2.6, though I admit it only worked for me using xsp2 from the command line. I get errors when I try to use mod_mono. I reported it to the list a while back.
Also currently there are significant style bugs on mono due to a not yet implemented feature. As I understand its going to be implemented soon and that problem will go away.
I'm in the process now of setting up to test on the latest mono from svn because they are getting ready to branch it for the Mono 1.9 release.