After dragging something to
my Quick Launch taskbar, the taskbar doubled in size. I have the double-ended
arrow at the edge of the taskbar but am unable to resize it back to its
normal size. I have tried locking and unlocking the taskbar but nothing seems
to be working.
What probably has happened is
that you have made the taskbar extra long by moving the "Dotted
Line" too far to the right. To fix this, you will need to grab the
bottom dotted line by using your left mouse button and move it up and closer
to the left on the top. This will, in effect, make the Quick Launch bar
shorter. Once you have moved the dotted line, you should be able to shrink
the taskbar back to normal size.