K3b freezes Gutsy when ripping to Ogg

I Have a homebuilt with an AMD 1600 with 2 gigs ram. Running Ubuntu 
Gutsy with K3b 1.0.4.
When I try to rip a cd to OggVorbis for my portable player K3b starts 
fine. anywhere from the third to the sixth track it freezes the computer.
The only way to back out is to reboot. Then I have to reboot two to 
three times as the first couple of reboots also freeze.
No error messages. K3b works fine burning cds.
Cpu usage when ripping stays between 87&93%. memory usage stays at 13%. 
swap file never gets touched.
I have tried reloading K3b. No help.
Under settings in K3b I have tried changing the buffer size with no help.
Any Ideas?
Doug

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