Used to go here all the time (probably once a week), as they were pretty consistent (but expensive...)
They closed very abruptly, I'm guessing on 5/1/2011. It was pretty weird as I literally went there one week (last week of April), things seemed normal, then showed up the next and the place was totally cleared out: all the furniture, signage, etc was gone and the door was locked. Usually places will indicate when they're closing....
There are a few other locations around town, but kinda doubt I'll go there. They were roughly equivalent to Chipotle and Qdoba. Only reason I really went here was close proximity to my work, and the fact that I had a bad experience with crunchy rice at Chipotle recently. Probably will just go to chipotle now...