[ubuntu-za] Buttons on 12.10

[Jan Greeff]

Can somebody please help?

Since upgrading to Quantal I have a problem with the "close," "minimise" 
and "maximise" buttons disappearing on some windows.

Is this a feature of 12.10 or just a setting that I don't know about?

For example, when I open a window on Thunderbird to write a new mail, 
these buttons do not show when the cursor hits the top edge like it does 
on the main TBird window. The same seems to happen on most other 
sub-windows and I find this very irritating because I often have to go 
to the window switcher to drag windows into a position where I can 
access the buttons to close the window or to change its size.

Best wishes,

Jan