I am still getting Force Closes after upgrading to 5.5 with cache and dalvik wiping... Whats going on here?
unless you did a factory reset and format system, i'm not surprised
you should do this so the bad scripts are properly removed and the settings they applied
those two wipes you did do nothing for the system, as the dalvik cache is just the other half of your apps, which regenerated soon as you reboot
those wipes would be fine with most updates, but with this one you want to remove a problem from the system, so a bit more is required