[Carnage]

#Credits: Christopher Riley, Vbulletin, http://www.vbulletin.com/forum/showthread.php?325798 
#File was made with the best bits from all the above.

#turn on and setup rewrite engine
RewriteEngine On
Options +FollowSymLinks

### THIS IS A LITTLE EXTRA SECURITY AND CAN BE REMOVED
#Has to be at the top else it wouldn't get past the accident prevention rules

RewriteRule ^includes/(.*) index.php
RewriteRule ^vb/(.*) index.php
RewriteRule ^packages/(.*) index.php

#Prevent rewriting files; this will/should stop accidentilly hiding images/js etc from the browser
RewriteCond %{REQUEST_FILENAME} -s [OR]
RewriteCond %{REQUEST_FILENAME} -l [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ - [NC,L]

#these rules can't be edited by my mod, so leave them as are.
RewriteRule ^content/(.*) content.php?r=$1&%{QUERY_STRING}
RewriteRule ^widget/config/([0-9]+) widget.php?r=config/$1&%{QUERY_STRING} 
RewriteRule ^list/([^/]*/)([0-9]+) list.php?r=$1$2&%{QUERY_STRING}
RewriteRule ^threads/([0-9]+)(?:/?$|(?:-[^/]+))(?:/?$|(?:/page([0-9]+)?)) showthread.php?t=$1&page=$2&%{QUERY_STRING}
RewriteRule ^forums/index.php$ forum.php?%{QUERY_STRING} 
#Place a # in front of the above rule and remove the # from the below rule if you want to make index.php optional in the url
#RewriteRule ^forums/(index.php)$ forum.php?%{QUERY_STRING} 
RewriteRule ^members/([0-9]+) member.php?t=$1&%{QUERY_STRING}
RewriteRule ^blogs/([0-9]+)(?:/?$|(?:-[^/]+))(?:/?$|(?:/page([0-9]+)?)) blog.php?u=$1&page=$2&%{QUERY_STRING}
RewriteRule ^forums/([0-9]+)(?:/?$|(?:-[^/]+))(?:/?$|(?:/page([0-9]+)?)) forumdisplay.php?f=$1&page=$2&%{QUERY_STRING}
RewriteRule ^entries/([0-9]+)(?:/?$|(?:-[^/]+))(?:/?$|(?:/page([0-9]+)?)) entry.php?b=$1&page=$2&%{QUERY_STRING}
#You can remove the # in front of one of these rules to rewrite blogs/ or blogs/index.php to blogs.php 
#(sorry i've no way to automatically detect If you are likely to need this or not)
#RewriteRule ^blogs/(index.php)$ forum.php?%{QUERY_STRING} 
#RewriteRule ^blogs/index.php$ forum.php?%{QUERY_STRING}

Thats what I get out of the rewrites script when using the same settings as you have.

Bear in mind, you need to SAVE the settings before the rewrite script will give you upto date results.