well mine was only £40 as compared to the £120 broken hauppauge one I had, which was a second behind the tv so absolutely useless for gaming, and no its not software it was a hardware thing, it just did that... it broke about a month or two after i got it and i hadn't even used it that much.
I owned a USB one, quality was apauling, it was slow and it had no ability to capture at all.
The first one i had wasn't bad, cost as much as the leadtek one but its quality was pretty rubbish and capturing was near impossible.
After those three joyus cards I wouldn't touch hauppauge with a barge poll, maybe its just their UK devision that sucks ass.
The quality of my current leadtek card is far surpassing all of them in quality and capture ability.