highlighting text and google dictionary

[Carter Brandon]

When I highlight any text in FF 3.5.3 I get a small box with an arrow in it, which if I click on it, gives me search choices, and Google dictionary. See image below. If I pass the mouse pointer over the dictionary menu item, I get another box with definition, but also a box at the top left corner which I can't get rid of with restarting Firefox. I've only noticed this recently, so is it something built into FF, or something I have installed without realising?

[Littlemutt]

Not built into Firefox. What addons do you have, and do you have the GoogleToolbar ?

[Guest]

To save typing all my addons, I disabled them all and it's still there. No Google toolbar installed.

[Carter Brandon]

Bumping this in case someone else knows how to get rid of this search/dictionary thing. This forum is much busier than I expected and new posts soon get lost, and mine has had now new views since yesterday. Just in case bumping a post is frowned on, I won't be doing it again.

edit: Solved. It was installed by an update of the Vista-Aero theme.