...

Is it normal to have such an unbalanced ratio or do I have to worry about something? In the past, I always used to recieve a quart more than I sent which I couldn't quite explain, but now...

I too am new to running a Tor relay, and have consistently had a send / receive ratio of about 1:4 since I started. I've been worried I've got something set up wrongly. Obviously I don't want to run a node that loses 3 out of every 4 packets, if that's what's happening, and if such a node is detrimental to the network overall.

Is that an obfuscated bridge? This assymetry usually occurs when you are using obfsproxy with your bridge; it happens because of the way that obfsproxy is integrated with tor. Don't worry about it, your bridge works fine.

I am using the relaying option in the Tor browser bundle. Does this mean I am using obfsproxy? Given that there is a specific obfsproxy browser bundle, and I am using the vanilla one, it looks like I am not.

What else might lead to such send / receive asymmetry?

Cheers,

Wayne