[Crispy's Critter]

I got this problem tonight. I was using my ps3 to watch some south park eps I dl'ed, and everything was fine. Then after the second ep was done it stopped showing the media server in the list, and instead showed the "scan for media server' thing. I repeatedly tried scanning, but you could see it wasn't even trying to do anything. I restarted the ps3 a few times, checked to make sure my comp was still set up as a server, which it was, restarted the comp again just to be sure, tried scanning again with the ps3, nothing. Basically when I use the ps3 browser, sign in or out of ps network, you can see the green light flashing repeatedly, but when I scan it just stays solid green. Have any of you had this problem, and if so, do you know why it would just stop working for no apparent reason, and/or know of a fix? Thanks