That's what you get from not having tests.

With the previous solution, the filter always marked the entrance page
url link as active. Off course this should only happen if the page being
called is actually the entrance page. Either tests or coffe help here.
Coffee it was in my case!
Fix for #937

As I mentioned in bolt/bolt@0640bca81d16361630ff326cadc9d47a3125b932 I encountered some errors. I figured out the url check for thumbnails is not made properly. The REQUEST_URI variable is not started with /thumbs when Bolt is running from a subdirectory. I also used timthumb.php-s check for prober url format beacuse I think we don't want malformed thumbnail url-s to redirected to timthumb.php.
Merge pull request #970 from doertedev/master

That's what you get from not having tests.
Merge pull request #971 from ntomka/thumb_patch

Fix for #937
Merge branch 'master' of git://github.com/bolt/bolt into bolt
Merge branch 'bolt'