Why Does Flash Videos work and somtimes not?

Can you give the output of:

lsb_release -a; uname -a; dpkg -l | grep flash; dpkg -l | grep gnash; dpkg -l | grep swf

Thanks

Distributor ID: Ubuntu
Description: Ubuntu 10.10
Release: 10.10
Codename: maverick
Linux sam-Lenovo-3000 2.6.35-23-generic #41-Ubuntu SMP Wed Nov 24 10:18:49 UTC 2010 i686 GNU/Linux
ii flashplugin-installer 10.1.102.65ubuntu0.10.10.1 Adobe Flash Player plugin installer
ii flashplugin-nonfree 10.1.102.65ubuntu0.10.10.1 Adobe Flash Player plugin installer (transitional package)

ok try:

sudo apt-get --purge remove flashplugin-nonfree flashplugin-installer; sudo apt-get --purge autoremove; sudo apt-get clean; sudo apt-get update; sudo apt-get -y upgrade; sudo apt-get install flashplugin-installer

Does that help?

no i did all that same problem?
thanks

What browsers have you tried?

Firefox 3.6.12 latest opera Chrome konqueror same problem

> work and sometimes NOT

Do you mind clarifying the symptoms?
http://www.catb.org/~esr/faqs/smart-questions.html

Could you also provide an url where the issue occurs?
Does it occur on the same url when compiz and - or unity is disabled?
Open the page where flash is an issue and monitor cpu and mem.
Open a page where flash is_not an issue and monitor cpu and mem.
e.g.
top | grep firefox
## Example output
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5445 username 20 0 783m 194m 33m S 1.9 19.4 11:00.10 firefox-bin

Ok try this:

sudo apt-get --purge remove flashplugin-nonfree flashplugin-installer; sudo apt-get --purge autoremove;mkdir ~/.mozilla/plugins; cd ~/.mozilla/plugins; wget http://fpdownload.macromedia.com/get/flashplayer/current/install_flash_player_10_linux.tar.gz; tar zxvf ./install_flash_player_10_linux.tar.gz; rm ./install_flash_player_10_linux.tar.gz

Try that.

I did a fresh install of maverick 10.10 as you can see NOW and Problem Solved on firefox but I do not know why??

Usually new installation isn't necessary for small issues like this one, aside missing the learning curve.
It might have been just a user misconfig or a plugin conflict.
You can test it when creating a test-user and see if the issue remains or as suggested from andrew by installing directly from adobe site, or just moving ~/.mozilla and restarting FF afterwards with a new profile.
https://wiki.ubuntu.com/MozillaTeam/Bugs
http://support.mozilla.com/en-US/kb/Profiles#new