I've found a tab featuring a clock in the 'Systeminformationen'.
Here you can run various tests on your hardware, including sd and cf benchmarks.
My transferrate for the sd card is 46.2616 kb/sec with the mmcsd driver installed. I will reinstall the original driver and post the results. (... if my zaurus reboots.... )
Anyway, this may take a little while.
Thanks so far,
Tim
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SL5500G, Hentges 3.3.6pre1, opie 1.1.3
Kingston 256MB SD, SanDisk 128MB CF