I went through the configuration but it could not fine the tuner. I'm using a Hauppauge WinTV-PVR-150 (1045). Here are the entries from /var/log/messages.

Apr 14 07:42:13 mythtv kernel: ivtv: ==================== START INIT IVTV ====================
Apr 14 07:42:13 mythtv kernel: ivtv: version 0.4.3 (tagged release) loading
Apr 14 07:42:13 mythtv kernel: ivtv: Linux version: 2.6.15-chw-2 SMP preempt 586 gcc-3.3
Apr 14 07:42:13 mythtv kernel: ivtv: In case of problems please include the debug info between
Apr 14 07:42:13 mythtv kernel: ivtv: the START INIT IVTV and END INIT IVTV lines, along with
Apr 14 07:42:13 mythtv kernel: ivtv: any module options, when mailing the ivtv-users mailinglist.
Apr 14 07:42:13 mythtv kernel: ivtv0: Autodetected WinTV PVR 150 card (cx23416 based)
Apr 14 07:42:13 mythtv kernel: ACPI: PCI Interrupt 0000:01:06.0[A] -> GSI 18 (level, low) -> IRQ 17
Apr 14 07:42:13 mythtv kernel: tuner 1-0061: chip found @ 0xc2 (ivtv i2c driver #0)
Apr 14 07:42:13 mythtv kernel: ivtv0: i2c attach to card #0 ok [client=(tuner unset), addr=61]
Apr 14 07:42:13 mythtv kernel: ivtv0: i2c attach to card #0 ok [client=tveeprom, addr=50]
Apr 14 07:42:13 mythtv kernel: tveeprom 1-0050: Hauppauge model 26052, rev C199
Apr 14 07:42:13 mythtv kernel: tveeprom 1-0050: tuner model is TCL 2002N 5H (idx 99, type 50)
Apr 14 07:42:13 mythtv kernel: tveeprom 1-0050: TV standards NTSC(M) (eeprom 0x08)
Apr 14 07:42:13 mythtv kernel: tveeprom 1-0050: audio processor is CX25843 (idx 37)
Apr 14 07:42:13 mythtv kernel: tveeprom 1-0050: decoder processor is CX25843 (idx 30)
Apr 14 07:42:13 mythtv kernel: tveeprom 1-0050: has no radio, has IR remote
Apr 14 07:42:13 mythtv kernel: cx25840 1-0044: cx25843-23 found @ 0x88 (ivtv i2c driver #0)
Apr 14 07:42:13 mythtv kernel: ivtv0: i2c attach to card #0 ok [client=cx25840, addr=44]
Apr 14 07:42:13 mythtv kernel: wm8775 1-001b: chip found @ 0x36 (ivtv i2c driver #0)
Apr 14 07:42:13 mythtv kernel: ivtv0: i2c attach to card #0 ok [client=wm8775, addr=1b]
Apr 14 07:42:13 mythtv kernel: ivtv0: unable to open firmware v4l-cx2341x-enc.fw
Apr 14 07:42:13 mythtv kernel: ivtv0: did you put the firmware in the hotplug firmware directory?
Apr 14 07:42:13 mythtv kernel: ivtv0 warning: failed loading encoder firmware
Apr 14 07:42:13 mythtv kernel: ivtv0 warning: Error loading firmware -3!
Apr 14 07:42:13 mythtv kernel: ivtv: probe of 0000:01:06.0 failed with error -12
Apr 14 07:42:13 mythtv kernel: ivtv: ==================== END INIT IVTV ====================

Any ideas on this one?

Thanks,

Check out the CompileIvtv directions on the wiki for the part about verifying your firmware. Given the other problems you've had I half suspect that you had a bad or incompatible burn on your CD. Did you check the md5sum before you burned it and boot with the "testcd" option?