I am using Gusty on Dell Inspiron 640 M

Immediately after logging in (on boot up) the brightness is increased.

I tried switching to console and back to GUI.  No it does not happen

However while working suddenly the brightness automatically increases.
I have to reduce it everytime this happens.  Happens quite frequently.

In dmesg listing, I do not find the pattern VGA or lspci.

While searching for video only the following lines are displayed

 Boot video device is 0000:00:02.0
[    1.504000] PCI: Setting latency timer of device 0000:00:1c.0 to 64
[    1.504000] assign_interrupt_mode Found MSI capability
[    1.504000] Allocate Port Service[0000:00:1c.0:pcie00]
[    1.504000] Allocate Port Service[0000:00:1c.0:pcie02]

In  Fiesty Fawn this was not an issue at all

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[Gutsy] intel driver resets laptop brightness to highest mode after start, 
logout or video play
https://bugs.launchpad.net/bugs/139954
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