[mikem]

Saving Forum profile can revert your theme back to the default theme... :? ...We don't want this..so,

open
includes/usercp_register.php

Find around line 502(it's all one line)

                                SET " . $username_sql . $passwd_sql . "user_email = '" . str_replace("\'", "''", $email) ."', theme = '$save_nuke_theme', user_icq = '" . str_replace("\'", "''", $icq) . "', user_website = '" . str_replace("\'", "''", $website) . "', user_occ = '" . str_replace("\'", "''", $occupation) . "', user_from = '" . str_replace("\'", "''", $location) . "', user_interests = '" . str_replace("\'", "''", $interests) . "', user_sig = '" . str_replace("\'", "''", $signature) . "', user_sig_bbcode_uid = '$signature_bbcode_uid', user_viewemail = $viewemail, user_aim = '" . str_replace("\'", "''", str_replace(' ', '+', $aim)) . "', user_yim = '" . str_replace("\'", "''", $yim) . "', user_msnm = '" . str_replace("\'", "''", $msn) . "', user_attachsig = $attachsig, user_allowsmile = $allowsmilies, user_allowhtml = $allowhtml, user_allowbbcode = $allowbbcode, user_allow_viewonline = $allowviewonline, user_notify = $notifyreply, user_notify_pm = $notifypm, user_popup_pm = $popuppm, user_timezone = $user_timezone, user_dateformat = '" . str_replace("\'", "''", $user_dateformat) . "', user_lang = '" . str_replace("\'", "''", $user_lang) . "', user_style = $user_style, user_active = $user_active, user_actkey = '" . str_replace("\'", "''", $user_actkey) . "'" . $avatar_sql . "

remove this part from that line

theme = '$save_nuke_theme',

also you may want to comment out all these lines which are right above that line

                        $sql = "SELECT * FROM ".$prefix."_bbthemes WHERE themes_id='$user_style'";
                        $result = $db->sql_query($sql);
                        $get_info = $db->sql_fetchrow($result);
                            $nuketheme = $get_info[template_name];

                        $handle=opendir('themes');
                            while ($file = readdir($handle)) {
                                if ( (ereg("[$nuketheme]",$file)) ) {
                                $nuke_theme_exsist = "true";
                            }
                        }
                        closedir($handle);

                        if($nuke_theme_exsist == "true"){
                        $save_nuke_theme = "$nuketheme";
                        } else {
                            $save_nuke_theme = "$Default_Theme";
                        }

now when you save yout Forum profile, the theme won't reset to the default template which matches with the Default theme DeepBlue.
mikem