OK. now this cost me 6 h to figure out.
The story: my wifes computer is rather old and since half a year if woulndt play flash movies / plugins at all. I installed chrome to use html 5 to watch youtube, but some still didnt play, as "comercialized" clips still need the flash plugin.
ok now i really wanted to watch this years x partys live stream on http://scenesat.com/video (a c64 demo party) on her computer, but.... no flash no party...

So I set down and googled for this problem
System: Ubuntu
Browser: neither Firefox nor Chrome nor Chromium works
Flash installed: 11.2 (latest version)

I followed all the good tipps: delete double installed flash players, apt-get purge flashplugins, reinstall again and again..
nothing worked for me. even not downloading the flashplugin by hand and putting it in the correct folderworked.
Firefox just flickered, Chrome told me about

shockwave flash. konnte nicht gestartet werden

and chromium said "missing plugin"

but i was confused: i heard chrome brings its own plugin called "pepper" ... nope it wasn't used on my computer...
so i renamed the pepper plugin and put it in the plugin folder (as suggested in more than one forum), but: not working _at all_ BIG SHIT

Ive tried everything 10 times, till i found out whats going wrong:

REASON:

As well Pepper flash plugin as adobe flash plugin 11.2 use a CPU feature called SSE2
chrome noticed this and didnt install pepper.... UBUNTU F*ING DID NOT ... it installed libflashplugin.so version 11.2 on my Athlon 2200+
Bummer

6 goddamn hours trying and getting 'good tipps' on how to fix it in forums (ubuntu forums): "remove conflicting versions ,,, blablabla"
I'm both pissed and glad - pissed about ubuntu and adobe trying to auto install the 11.2 on an athlon and glad i figured it out on my own... on my search i've seen 100 of ppl with exact same problem, and noone helped them

FIX:

2 minute fix: download the (older) adobe flash player version 11.1 from the archived versions site from adobe.

when you found this page you already know how to install this by hand.
note: this only helps if you use a 32 bit athlon processor or your /cpu/proc doesn't tell about SSE2 feature


need sleep now :/

webdoctor