Employees are still swapping music and other files on peer-to-peer applications at work despite the legal threat from the record industry, a survey released Wednesday said.
http://news.com.com/2100-1027_3-5169508.html?tag=nefd_top

Which companies have such weak FW's that P2P works?

I leech but its from external lines :-)

"Sunnyvale, Calif.-based Blue Coat offers hardware that companies can use to control file sharing and other Web activities on their corporate networks. "

meanwhile a small private bank in Zürich has developed it's own solution. It's a rare and nearly unheard-of hardware called NICAA, short for no internet connection at all...