I have been using Ktorrent for years now, and always had good speeds.
Right now I am downloading (just for your case ) the same movie as you.
It's coming down at 384 KB/s from Torrent Reactor So, nothing to complain about.
BTW I am in Thailand.
Check your settings
--download path ( enough space ? )
--number of upload slots ( does make a difference here, funny but true )
--download and upload bandwidth
--performance ( in advanced )
@ menotu : Where is my firewall i am on PC Linux OS 2009.v2
You find your firewall settings in PCC/security/firewall
Its OFF by default in ( my ) 2009.x
PCC is the black/blue icon in the taskbar
Edit : Movie ( 715 Mb ) downloaded in 36 minutes.
Nothing wrong with Ktorrent