Were your settings also reset? When you say your plugins are gone, can you not enable them in Preferences/Plugins? What is in the logs? Can you run deluged -L debug? Why can't you download the plugins? What is in your: /usr/lib/python2.7/site-packages/deluge-1.3.14-py2.7.egg/deluge/plugins dir? /usr...

Yeah, you are going to have to recompile some modules with gcc_2-0r-hydra flag off on compile time and maybe add some scripts on event_executor.
You know Fortran?

Changing the user might be "fun", synocommunity.com looks like yet another package manager, but I don't see any details for deluge package there. Is the install procedure the same as when installing from Package Manager? Did you get a log, when you installed deluge? Can you get a shell/ter...