How to disable window maximizing when dragging to top panel [duplicate]

Just starting to use Unity with 11.10, and obviously there are a lot of changes to get used to. One of the most annoying is the habit it has of trying to maximize a window when I drag it up against the top bar to position it.

How do I disable this behaviour? I assume there's a toggle in CCSM somewhere, but I can't find it.

You can disable it from ccsm : Click to install

Go to Windows management--> Grid --> Edges --> Re-size Actions

Top Edge: change it to none.

Recommended

If you simply want to turn off this feature then run the following in a terminal:

gconftool-2 --set /apps/compiz-1/plugins/grid/screen0/options/top_edge_action --type int 0

Alternatively - with a GUI, use gconf-editor: