Thanks pickled. I am also experienced the same err and your text " Ubuntu 9.04 (Jaunty) desktop with graphical interface" helps me to get rid off from the errors.

Major issue:

The painful major issues are blank screen ( dark screen ), broken image screen. To resolve these errors you need to change the source settings upto both the " Function " and " source " become orange colour text.

This is my configuration and its works for me

Device path : /dev/video0
Capture method : video for linux version 2
Device Channel : 0
Device Format : PAL
Capture Palette : YUYV



Thanks
Sathish