Thank you, dear sister. I experienced the same, but just worked around it. It in nice to have my right click back!!
Apparently it is not restricted to the Yahoo toolbar. Had another report to remove the IE tab. Did not check it out, but if anyone is experiencing this problem, there may be other ad-ons that are buggy.
And I do not recall asking for a Yahoo toolbar either. My browser window is pretty large on top. Eight lines on top before my open windows begins. I am counting all lines. It is about a third of the screen.