I have comcast also and have Mandriva LE 2005 it might not be a flash player problem,I think(MO) it's the browser.Firefox has shown web pages that the text clashes. I installed Netscape it seems a pretty stable browser.It shows our comcast start page well. But this is only a personal opinion.
Good Luck
I am new to Linux and just installed Mandriva Linux. My homepage only load half of it and i don't know why. Check out my screenshot:
http://home.comcast.net/~javiermiramontes/images/comcast.gif
Im using Firefox 1.0.2 and the page is http://www.comcast.net. I dont know if its a flash problem or what... The page loads correctly in Windows using same browser.

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