Thanks for this Boris - Andrew, can you please make sure this finds its way into the main branch

Nice patch Boris!

It looks like 1 line was left out of this patch when it was applied and I get this error:
"Notice: Undefined variable: surl in /var/www/silverstripe/sapphire/main.php on line 110"

This 1 line patch adds in the missing line to fix the error and make the redirection work:
http://www.elijahlofgren.com/silverstripe/patches/Add-missing-surl-silverstripe.2.0.DailyBuild.2007-05-16.patch

I didn't like the fact that this patch added a lot of code to main.php that was replicating code in RootURLController and Director. So I've patched SVN so that ContentController calls a new method called RootURLController::should_be_on_root($currentPage) to decide when to redirect from home/ to /.

It fixed some bugs with the system that were breaking on my local dev environment, and it also will now redirect home/?getvar=1 to /?getvar=1.

It doesn't redirect if there's an action (home/something) or post variables. It makes use of $controller->urlParams prepared by the director, rather than processing $_GET['url'] itself.

You'll need to update your version of SilverStripe to 2.0.2