Are you using zurkware, or did you give it a try in the past?
When I read your post yesterday, I noticed my C8 control panel said 5.0.36 and C1 said 2.8.85. (Using the Chumby server.) I checked and found that those updates aren't noted anyplace on Chumby, even as a beta. I guessed that maybe the CP version numbers had changed because in the past I'd used zurk's offline versions, then removed them. I asked on the Sourceforge zurk forum, but didn't get a clear answer. Weirder yet, I just replugged zurk v18 back into my C8, and then it said 5.0.35. Then I unplugged that and went back to the Chumby server and it says 5.0.36 again.
So, that's all I can figure, we're seeing zurkware CP numbers for some reason, and they don't permanently change back to the "real" CP numbers when we go back online. Maybe someone else has noted the same quirk.