I have recently switched from Comcast to Verizon Fios, I have never had an issue with Flash video until I started using Fios. Any site (youtube, ESPN, etc.) that runs a flash movie I am having major issues with, it's like watching a slide show, the sound works, but the video does not.
I have "optimized" my laptop for Fios, I am also getting the proper speed when connected to the Verizon router (20/5).
Is this a common issue? I read a thread where it states I may need to run my own router to correct the issue?
There is nothing that Verizon installs that should affect your flash plugin. However, if you aren't able to view flash, you can uninstall and then reinstall from here:
Fiber Solution Center
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