[Linux FC8] sansa express remount when I use detect of libmtp

[xmuchgw]

I downloaded libusb-0.1.12, libmtp-0.2.6 and compiled them successfully in my Linux machine (Fedora 8).
Then I found detect, connect and other utilities in libmpt-0.2.6/example.
I insert my Sansa Express into my Linux host, it will mount automatically.
But when I run the detect utility, Sansa Express will umount and mount again.
And when I run connect --sendfile test.txt, test.txt, it will umount when finish sending test.txt to Sansa Express.

Does anyone meet the same problem?
Could anyone give some suggestion to solve this issue?
Thanks in advance.

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