[Webkit-unassigned] [Bug 51991] New: Safari pegs CPU, becomes unresponsive when loading Channel 9 video

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=51991

           Summary: Safari pegs CPU, becomes unresponsive when loading
                    Channel 9 video
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
               URL: http://channel9.msdn.com/shows/Going+Deep/Arun-Kishan-
                    Farewell-to-the-Windows-Kernel-Dispatcher-Lock/
        OS/Version: Windows XP
            Status: NEW
          Keywords: NeedsRadar, PlatformOnly
          Severity: Normal
          Priority: P2
         Component: Media Elements
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: aroben at apple.com
                CC: eric.carlson at apple.com, jer.noble at apple.com


To reproduce:

1. Go to http://channel9.msdn.com/shows/Going+Deep/Arun-Kishan-Farewell-to-the-Windows-Kernel-Dispatcher-Lock/
2. Click on the video to start it loading

Safari pegs the CPU and becomes completely unusable. This happens both with Safari 5.0.3 and ToT.

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