I am getting the message box shown in the screenshot below when watching videos on YouTube using Firefox 4.0.1. Also, Adobe Flash is crashing very often. It's not only YouTube, I can see this message on almost all streaming videos. I am running Ubuntu 11.04 on a ThinkPad x300.

message box

  • 2
    I'm sorry, but lmao at the first comment on that video. Jun 5, 2011 at 18:20

1 Answer 1


Applications that run in Adobe Flash Player may want to store some information on your computer, but the amount they can store is limited to 100 kilobytes unless you agree to allocate additional space. Local storage settings let you specify how much disk space, if any, applications from a particular website can use to store information on your computer.

You can read all about Flash's Local Storage here.

To configure it, browse to these webpages (both lead to tabs in the Flash Player's settings manager):

Note, that those settings are global and not bound to the browser. If you change anything with Firefox, the change will also affect Chromium, Opera, etc.

  • Is there any relationship between accepting/rejecting this message and crashing of adobe flash? Please let me know.
    – samarasa
    Jun 5, 2011 at 18:52
  • As I generally don't allow pages to store any information I don't think your crashes are related to this.
    – htorque
    Jun 5, 2011 at 19:14

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