Something is Going Wrong, and I dont know what

Something is going wrong with our RPG group and I dont know what.

We're still playing Legend of the Five Rings, a game I adore before we started playing earlier this year, and having played it for the first time, I still love it to death. But I have found myself for the 3rd time in as many sessions really not enjoying the session at all.

Firstly we have 2 new players, one is a go along with the crowd kind of guy who is intelligent, smart and funny, but enjoys playing the intelligent warrior type. The other player is a post university student who is careful in his actions and thought processes.

Added to this mix a turbulent few weeks, different venue for each session, plus a couple of players finding it temporarily hard to get to the game (only short term).

My problems is I really am not enjoying it at all. Now I dont know if its ME, the new PLAYERS, the GAME/GM, or the GROUP.

I need to analyse this a little further, but I need to work fast, as at this rate, I would have clocked up almost a month's worth of gaming wherein Im not enjoying myself.

I intend to discuss this with the GM, who is also a good friend of mine too.