At last I updated my biggest gallery from 2.1 to 3 and noticed something I couldn't while testing beta 3 (because I used small albums). When you have more than one page for collections, albums or picture, there appears pagination on bottom of page. In 2.1 it was ending with ?page= and number and now in 3 it is ?plog_page= . I found those changes in plog-functions.php in function generate_pagination. So, does anyone know how to again write urls with old style or some mod_rewrite code for .htaccess with 301 from old urls to new one?