Can't transfer file from Ubuntu to Samsung Galaxy tab 10.1 (Honeycomb 3.2)

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http://askubuntu.com – Ever since I upgraded to Honeycomb 3.2, I can't seem to transfer file in Ubuntu. I have tried turning on and off the USB Debugging Mode. When the debugging mode is turn on, the device doesn't even get detected. I have tried installing the mtp-tools and mtpfs, but it doesn't seem to work. Any advice? (HowTos)