When I upgraded from Intrepid to Jaunty, I noticed that
things were painfully slow. I had looked into this before, but
couldn't remember how I found the answer or what it was. After skimming
through thousands of lines of IRC logs, I re-rediscovered what I discovered
the first time.
rm -rf .git/svn git svn rebase --all
I found it at this site (oebfare.com).