Problem with v4l in MythTV

Hello everyone. I'm new to this list (it's my first post), so I hope this hasn't been covered already. I'm running Fedora 8 x64 and MythTV 0.21 (fixes branch). I have a pcHD5500 capture card and have it configured for the 2 available portions: analog and digital (analog via v4l and digital via DVB). The digital portion works great, but the analog looks horrible.

When I try to tune a channel in MythTV, or watch a recording that was made via the analog portion, it looks very static-y and jumpy (a mix of snow and green lines on the right hand side) and the audio is very erratic. I tried using tvtime to check the tuning, and when I tune a station, I get the first second or 2 of it, then it goes to an all blue background and a "No signal" message on it.

Any ideas on where I can start looking to resolve this? I'm using kernel 2.6.24.5-85.fc8. BTW, I see no errors in /var/log/messages, and I get messages similar to the following when I run dmesg:

cx88[0]: iq f: 0x140000c0 [ write eol count=192 ]
cx88[0]: iq 10: 0x00180c00 [ arg #1 ]
cx88[0]: fifo: 0x00180c00 -> 0x183400
cx88[0]: ctrl: 0x00180400 -> 0x180460

cx88[0]:   ptr1_reg: 0x00181a88
cx88[0]:   ptr2_reg: 0x00180478
cx88[0]:   cnt1_reg: 0x00000069
cx88[0]:   cnt2_reg: 0x00000000

cx88[0]/0: [ffff81004ccf4000/0] timeout - dma=0x5a835000

Thanks!
Harry

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