[sane-devel] Problem with Mustek - Stripes, what should I do?

[matryc]

I have a problem with Mustek BearPaw 1200 CU Plus scanner. Scans are ugly, 
made of stripes...
I use the latest  sane 1.0.13 at Debian 2.4.25
The sample scan is here: http://tinyurl.com/2crwj
As you can see, the whole scan is filled of stripes and the colours are bad 
too.
The scanner is OK, because I have tested it at my brothers PC with win2k.
Please help me.
-- 
Greets
matryc