I've tried reinstalling the flash player from Adobe's site to no avail. It won't make it through a five minute Youtube video most of the time either. But as soon as I hit a web page with lots of flash content, such as my e, a kids website having to do with some of my daughter's toys, the computer will be locked up in ten minutes for sure. I can do video all day or play games and it is rock solid. 512MB RAM, nVidia GF6200 256MB video card. I'm running a Quicksilver G4, with GigaDesigns 1.6GHz single G4 upgrade.
I did a search but didn't find quite this issue.
