Hello,
I was able to access my Music Pen mp3 player using usb-storage driver
in 2.4 without any problems. After updating to 2.6 this was not possible
anymore. It seems that usb-storage driver in 2.6 detect the device but
I was unable to access /dev/sda1. "mount -t vfat /dev/sda1 /mnt" returns
this error: "mount: /dev/sda1 is not a valid block device"

Under 2.4.21-ck3, sda1 is corectly registered.

Please see the attached files containing dmesg snippets from 2.4 and 2.6
kerneles as well as 2.6 config. If you need more information I'll be glad
to provide it.

The 2.4 kernel that I tested was 2.4.21-ck3
The 2.6 kernel that I tested was 2.6.0-test5-mm1, 2.6.0-test4 and 2.6.0-test1

--
Georgi Chorbadzhiyski
http://georgi.cybcom.net/