I recently purchased and returned (thanks to newegg return policy) three analog TV Cards. Two from Hauppauge and one from Leadtek.

All three cards frooze my computer on program termination.

Rebooting WinXP and cleaning out the Windows/temp files did not solve the problem.
Hauppauge Tech Support had no real answer and Leadtek was unresponsive.

My computer is an AMD 3100+ with 1GB of DRAM Memory.

Any suggestions would be much appreciated.

What software were you using? Was there any disk activity when it 'froze?' Video programs use a lot of memory and can generate a lot of disk activity. I was running Roxio Creator 9 on an AMD XP 2600 and found it took a long time to 'finish' after decoding or recording a video. It is going much faster now that I'm using an Intel Core Duo.  

Many thanks for your interest in my problem.

I'm running Windows XP Professional on a 32 bit Sempron 3100+ (1.81 GHZ) with
1 GB of RAM. (I still run FORTRAN programs under DOS.)

Both Hauppauge Cards were WinTV-PVR-150 MCE PCI but I don't have MCE.
In the case of Hauppauge I believe I downloaded and tried every driver and executable avail for this card. In the case of the Leadtek PVR2000 PCI the software is much more limited.

I did not notice the disk activity but rather doubt that this was the problem as the
Hauppauge Card frooze on termination after a substantial period of inactivity.
The Leadtek card frooze if I tried to terminate playback but not on program termination.

I use RegVac to clean up the registry and Norton Anti Virus and Acronis Privacy Expert to keep my drives  as clean as possible. I disabled Norton and Acronis before software installation.

I do have Nero 7 installed but this don't suspect any interaction.

Again many thanks.