Hi Adriano,
Filing a bug probably will have no effect unless a test case that produces the error is included. If there is abug in 1.2.5 it may already be fixed in svn.
The error seems very strange to me. I would not think that remoting would be involved in normal web operations. It could be a configuration issue.
I have a hosting account also at grokthis but its currently running and old 1.1 framework version of mojoPortal. I did not know that grokthis had upgraded to mono 1.2.5, but since they have I will try to get mojoPortal 2.3.6 running there. Hopefully this week.
I'm also having trouble running mojoPortal on mono from svn after upgrading to opensuse 10.3. A lot of major changes in MonoDevelop 0.16 too so hard to know if the problem is being cuased by the way MonoDevelop is compiling things.
I'm going to try with an older vm of opensuse 10.2 and see if it works with latest mono from svn today. If not then I can be sure the problem I'm having is a mono regression. I am not getting the same error as you though. I get an error about not finding the file or assembly App_GlobalResources on opensuse 10.3
I'll post again if I learn anything new.
Best,
Joe