Original (closed) bug:
"Using JDK 1.5 RC1, BufferTabs slows down jEdit
tremendously, e.g. the textarea scrolls very slowly.
This happens only if the tabs are located below the
textarea, it does not happen if they are above it."
My (texol) comment:
I can confirm this bug for JRE 1.5.0_02 and 1.5.0_03
(running Windows XP). It doesn't happen if you place
the tabs at the top, but happens in any other case
(left, right and also bottom). So this bug
should be re-opened.