I got my WinTV card working at last-took several days and more distro's but Mint worked O.K.
Version KDE Beta
Method: followed this URL http://www.hauppauge.com/html/linux.htm followed instructions exactly.
Launched Kaffein. Ran channel scan using default settings- no joy, thought xx*** etc still got problems.
Sat and thought for 2 minutes then substituted correct local transmitter for default, Sudbury U.K. in my case.
Hope this helps others :