Group Connecting Not Working

[Joe Gamblin]

So I'm working on a model for the image contest and for no reason, group connecting (the / key) quits working. Then I create a group and the color is added to the whole model, not just the group I've selected. Then I delete all my groups, and try selecting the whole model, which doesn't select half the points. I lasso them in, and try copy and pasting into a new model window, and I only get half of them pasted. Basically, this model is acting all funky, and I can't understand why. I tried opening some other models, and everything works perfectly on them. I've never had stuff like this happen before, what am I doing wrong?

 

Here's the model so far, if someone else wants to try messing with it to see what I've done wrong it would be great.

 

Hall_of_Justice.mdl

[Joe Gamblin]

Nevermind. I had mirror mode on. ARRRRRGGGGGHHHHH! Boy, is my face red.