An established and well behaved desktop system runs Fedora very well and is stable, gallium or fglrx, heavy steam games, heavy disk i/o, and internet tasks with no problems.

However, whenever adobe flash is enabled (latest from their site) in Firefox, and viewing video from 1 minute to 1 day, a PCI bus crashes taking out portions of the system.

This occurs on Fedora 21 TC6 Live, Fedora 20 Live, rawhide live, and Fedora 19.

This issue has existed for quite awhile, and manifests itself in a variety of obscure ways, specifically in my case the PCI bus failure hangs the network with massive tx/rx errors on the Qualcomm Atheros AR8151 (atl1c module) and frozen sata devices. Hardware investigated and tested. It occurs specifically on an Asrock Extreme 3 r2.0 board, but may appear differently depending on system and PCI configuration and likely other boards as I have seen other kernel and fedora bugzilla reports that point to similar issues.

More detailed information here.
Fedora bugzilla here: https://bugzilla.redhat.com/show_bug.cgi?id=1135801

Thank You for your consideration, awfl.

PS not sure if I should keep updating that bug report, or start a new one?