As you read I'm having untimely difficulties with "OPENSHOT". I do a lot of editing for youtube and it requires HD uploading.Now the problem here seems rather odd and I know of a few people who are suffering from the same issue. This problem began when I installed the Ubuntu 11.10 update. I went into the video editor and began my project. After finishing I moved to export and set the same HD export setting. Profile: WEB Target: Youtube-HD Video Profile: HD 720p 25fps Quality: Med or High (both have the same output) -I'm not sure if thats the exact way how to export into youtube-hd, but that's irrelevant 'maybe'.- I begin the export. Here's the kicker... after 5 minutes and almost half way through the export, the entire system "shuts off". It takes a few minutes to restart it, attempting restart to early makes it shut down again... (I have to wait a good 3 or 4 minutes. Thankfully I saved my projects) I'd appreciate some help on this, and excuse me for my "wrong ways of posting" i'm a noob, so try being a little patient ^_^ (If this problem can't be solved in the next few hours, I'll be late on my next upload and most likely loose my job for youtube...)
You need to provide more info. Does the system instantly power off, or does it shutdown as if you used the UI to shut it down?
You said, "attempting restart to[o] early makes it shut down again," so I'm going to hazard a guess that your system is overheating. See if running another app that pegs your CPU at 100% for that period of time causes the same behavior.
You probably just need to clean the dust out of the system to restore airflow.