Blocking .torrent files with Regex

Question

I am trying to block users from downloading .torrent files as another way of limiting the amount of BT traffic I am seeing on the network. I can't seem to get it to stop the files from being downloaded though.
Here is the current configs I am using.
show run policy
policy-map type inspect http http_inspection_policy
parameters
class BlockDomainsClass
reset log
match request uri regex class URLBlockList
reset log
policy-map global_policy
policy-map inside-policy
class httptraffic
inspect http http_inspection_policy
sho run class-map
class-map type regex match-any URLBlockList
match regex urllist1
class-map type regex match-any DomainBlockList
match regex domainlist1
match regex domainlist2
match regex domainlist3
match regex torrent
class-map type inspect http match-all BlockDomainsClass
match request header host regex class DomainBlockList
class-map httptraffic
match access-list inside_mpc
class-map type inspect http match-all BlockURLsClass
match request uri regex class URLBlockList
sho run regex
regex urllist1 ".*\.([Tt][Oo][Rr][Rr][Ee][Nn][Tt]) HTTP/1.[01]"
regex domainlist1 "(h33t|btbot|meganova|fulldls|bitsoup|fenopy|isohunt|mininova|gpirate|monova)\.(org|com|net)"
regex domainlist2 "(zoozle|vertor|thunderbytes|demonoid|thepiratebay|flixflux|entertane)\.(org|com|net)"
regex domainlist3 "(btjunkie|piratic|piratenova|empornium|filemp3|topmango)\.(us|org|com|net)"
regex torrent "torrent"
sho run service-policy
service-policy global_policy global
service-policy inside-policy interface PRIVATE
ACL
access-list inside_mpc extended permit tcp any any eq www
access-list inside_mpc extended permit tcp any any eq 8080

Answer 1

This may help you out.
http://www.nortfm.com/?View=entry&EntryID=44