I have the latest version of Firefox, and have Windows XP 32-bit. Opened computer yesterday, got box telling me to update to latest version of Flash (11.6.602.158). Went to Adobe screen to download, pressed open from download, pressed "Run" in "Run" box and nothing happened. I waited an extra bit of time to see if perhaps to see if the install would take place. No install. Can't get past "Run". Went to Add-on Manager. Shockwave Flash 11.5 r502 is active.

In the past Flash has seemlessly updated without a glitch. What can I do to get the latest version of Shockwave Flash to get past "Run" ie to install, as it has in the past? Thanks in advance for your suggestions and help.