USB 2 tuner toys and older hardware?

[scott-DPNOqEs/LNQ at public.gmane.org (Scott Ehrlich)]

Another scenario - I have an older PC with USB 1.0 running Ubuntu 7.04. 
What are people's experiences using such USB 2 tuner devices on older 
hardware with USB 2.0 add-on cards?  Can the OS deal with the older system 
and adequately process the audio and video, or is there a limiting 
hardware factor (processor and memory) that necessitates a newer system?

I currently have mythtv, xawth, and tvtime installed, and am waiting for 
the tuner to arrive sometime in a week or so.

Thanks for your insights.

Scott

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