Regex bug for checking valid URL

This line in slideshare.inc

else if (preg_match('/http:.+www.slideshare.net[^#.]+/',check_url($embed),$matches)) { //URL parsing

Thinks valid URLs are invalid, for example:

http://www.slideshare.net/Angelo.Corsaro/a-gentle-introduction-to-opensp...

This URL has a dot in the user name, simple fix is to remove the dot from [^#.]

Kelvin