External System not connected

While driving to work today I noticed that I was in warp stealth at 50MPH or so I thought. I thought cool and I keep my foot there. When I had to slow down I noticed that nothing changed on the screen. I tried switching screens but that did not work. I also noticed that my MP3 player was not playing music. The MFD was locked up but the wheels were moving. When trying to go the the map it said "External System not connected". The audio controls would not respond either. I pulled over into a gas station and rebooted. Everything seemed to work fine all the way to work. When I got to work I got into the diagnostic screen a did a quick check and everything showed up as OK. Should I take it into the dealer or just wait a while and see what happens? I know there was a recall on the 04 MFDs but is there any known problems with the 06?

[EDIT]
I should add that this happened at about 5555 miles on the OD :blink:

 

I have not messed with any mods to the MFD or the NAV. The only thing that I have messed with is installing the EV button a while back. I'm tempted to take it to the dealer after work to see if they can read any error codes. I really don't want take it in and have them ruin my 68+mpg tank I have so far. I'm not to worried about it right now since the car was fully functional when the MFD locked up. If I dont see any problems when I start it back up I will check the connections when I get home.

 

Just got home and I check the connections by opening up the hole where the center speaker is. They all seemed fine. I also checked the NAV connections and they seem fine too. Oh well. I guess I will just have to wait and see if it happens again.

On a side note I got my second Prius wave and a short talk. We stopped at a light and I asked him to roll down his window and I asked what mpg hes gets. He said he got 48mpg but got 60mpg once. I said thats great! He asked me what I was getting and I said my current tank is 68mpg. He also said he tries to coast to the stop lights. I told him to go to priuschat.com for tips to improve the mpg. Then we had to go because the gas guzzlers behind us made us go. :angry: I wish I could have gave him one of my recently printed priuschat.com business cards. I followed him all the way to my exit. He gave me a hazard flash good bye. Hope he comes here. I would like to talk to a local owner. There is not many of us around here.