When I use GESHI_HEADER_PRE_TABLE mode but without line numbering I get double newlines in the rendered source code blocks:
there is both a "\n" (PRE mode) and a [br] (like in DIV mode).
patch in attachment fixes it for me.
(I'm the "nobody" of the comment from 2009-08-16 22:38 about the Drupal API urls)
I tried the version from SVN and I can confirm that this fixes the problem.
Many thanks!