k3b iso-image write stops after writing iso, without verifying it

I'd like to get a SuSE image written to a dvd. I do have the iso-image on 
disk, and can drag it to "new data dvd project". Subsequently the program 
correctly calculates the md5sum, and meanwhile I tick the verify-box. After 
having calculated the md5sum, the program starts to write the iso to dvd. 
While writing to dvd the "percentage indicator of progress" increases, from 0 
at the beginning, till 50% after having written the hole immage to dvd. 
I made a snapshot of this situation, named ssk3bdvd1.png, which you can see at 
http://www.xs4all.nl/~michkloo/ssk3bdvd1.html. Subsequent snapshots are 
numbered up till number 7 (ssk3bdvd7.html) . with
snapshot 1  displaying md5sums
snapshot 2  displaying writing process of iso to dvd
snapshot 3  displaying writing process almost finished
snapshot 4  displaying writing process completed
snapshot 5  displaying writing finished, starts verification process
snapshot 6  displaying writing process halted, only displaying to be at 50%
snapshot 7  displaying stopping of the unproductive writing process

Anyone a suggestion how to get the writing process productive, that it starts 
the verification process, and continues till the end? At present I can mount 
the dvd, and it looks all right (regular directorystructure) but I cannot 
boot from it.
Thanks
-- 
Julien Michielsen                   
julien_at_michkloo.xs4all.nl


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