Thanks so much for all this information as well as the fix for 1.5.8.
I really scratching my head to fix this stuff and this is really helpfull.
In 1.5.9 I changed lot of the reflection to use direct delegates instead of eg MethodInfo.Invoke, which results in much faster performance using the delegate of course. Unfortunately there are some issues with it in mobiles, so I think I will just go ahead and revert these.