[mythtv-users] Serious performance issues with Fedora Core 3 & MythTV

[Matt Merkey]

Within the past couple weeks I upgraded from MythTV 0.17 to 0.18, and 
got several updates for FC3 as well. After that, mythtv's performance 
just went straight to crap. I'm seeing much higher CPU usage, jumpy 
video (when the CPU usage spikes at 100%) and really awful crackling 
sound. I did a clean installation of FC3 and MythTV and nothing changed. 
I tried downgrading to MythTV 0.17 and nothing changed. I've tried both 
with and without the Linux drivers for my Radeon 9600, no change. The 
conclusion would seem to be that something that was updated with FC3 is 
causing the awful performance, but I'll be darned if I can figure out 
what it is. Here's a summary of my system's specs:

Gigabyte GA7VA mobo
AMD XP 1900+ (@ 1.6 ghz)
512 mb of RAM
Western Digital ATA/100 160 gb 7200 RPM hard drive
ATI Radeon 9600 Pro
ATI TV Wonder (the old plain PCI version, yes I know it's an awful card)
Creative Audigy Gamer sound card

Up until that update, I had silky-smooth performance in MythTV and 
excellent sound. I've been posting at mythtvtalk.com, but so far I've 
been unable to get any help from there. What's the culprit here?