I have exactly the same problem..
first search is possible but mostly I can't connect to any of my routers..
after that I'm only able to find wireless connections when I unload and reload the rtl8192cu module or reboot BT
monitoring is working fine
Is there a solution yet?
Anything I tried didn't work..
When I use the AWUUS036NHR in windows there isn't a problem to connect and search for connections
When I tried to install the original realtek driver I get this error msg
WARNING: Symbol version dump /usr/src/linux-source-3.2.6/Module.symvers
is missing; modules will have no dependencies and modversions.