Annoying IE feature?

I use IE9 for a lot of browsing and sometimes I inadvertently click the 'Open in a new window' rather than 'open in a new tab' which then produces an offset for the new browser window. Since my browser window is not full screen (I use gadgets on the right-hand side) this often results in the new window overlapping the gadgets and what is worse is that when I close the browser it retains the shifted location on reopening - even having closed all windows or tabs. I haven't bothered searching for a solution for this as I try to be careful but it is really annoying. Am I missing a really simple tweak to stop this behaviour?

Give this a try.

1. Control Panel > Internet Options > General tab
2. Click Settings button in the Tabs section
3. Select "Enable Tabbed Browsing"
4. When a pop-up is encountered: select "always open pop-ups in a new tab"
5. Open links from other programs: select "a new tab in the current window"
6. OK your way out of the dialog boxes and restart your computer. See if this helps.

Thanks chaps, I didn't have this one selected - "always open pop-ups in a new tab" but that hasn't solved it and the only thing that works is to grab the window and position it where I want before closing it.