Ubuntu 9.10 (Karmic Koala) has a curious bug on the 64-bit Intel/AMD version whereby on some systems you can play Flash perfectly, but the Flash application does not recognise any mouse clicks in it. This means in sites such as YouTube, you can’t click the mouse to play and pause, or seek in a video – you’re forced to use the keyboard.

This is a known bug with the flashplugin-installer package and is currently being worked on by Canonical. In the meantime, if you wish to fix the problem yourself now rather than wait for the official fix, just follow these instructions…

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