ubuntu cd burner problems

[betty]

hmmm, well after i was sooo bragging that everything was working fine in 
feisty fawn, i tried to burn a cd. actually tried any number of cd's. 
everytime it (serpentine) asks to have a blank cd put into the burner, 
and i do that, it keeps asking, like it doesn't recognize that one is in 
there.

i tried using different cds. and i tried using the second build of 
feisty that i have on my office computer (in case it was the burner 
(hardware) ) itself. same message. i looked on message boards but didn't 
find this problem.

any ideas?
this could be a drag.
thx

-- 
betty i.
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