I use:
HP Pavillion ze4500
2Ghz Athlon Processor
1GB Ram
Windows XP service pack 3
IE8
Opera 12.15
This morning, 2 things happened when I went to Youtube using IE8: I got a message saying IE8 was no longer supported on Youtube & that I needed the latest version of flashplayer installed (I've got a screenshot of that!). When I tried to get the lastest version, it wouldn't complete installation, the installer indicated "download timeout" (I've got screenshot!). I tried using one of the other download options offered on this site's help section and verified that I got the latest version installed (I have screenshot!). However, Youtube still gives the same message about needing flashplayer.
Next, I tried using Opera. I got no message saying Opera wasn't supported and no message saying I needed flash player, but video was choppy when played. I tried downloading flashplayer using Opera, but still got a "download timeout".