Haven't used it since I installed it. I think the directory that you need to install apps to is restricted, but i'm not sure about that. Like I siad, I don't really know anything about Linux
I browsed OT that night, used AIM and messed around but that was it. If you'd like some computer capabilities where your PS3 is, it could be worth it.
Just don't be like me and remember to back up your saves before you format to install it!