Help with my AC?

So, we turned the AC on for the first time a week ago or so. It crawled to a halt. I went down and there were blocks of ice growing out of it. I figured I'd caused it by neglecting my filter for a couple months past its expiry date.

I got a new filter, but still having the same problem. I can run it for a few hours, but then it starts to blow less and ice builds up on the pipe coming from the outside AC unit to the coils inside. Here is an album of pictures of the coils and surrounding area:

http://imgur.com/a/wLEjS

Any ideas as to what I might do in order to prevent this from happening in the future?

edit: These pictures were taken about 20 minutes after I turned off the AC and pulled out the coils.

edit2: coils...not condenser.