[ubuntu netbook remix] Cannot connect in 3g after a crash

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http://ubuntuforums.org – Hi. i'm using my phone right now post this. I used to plug my phone (samsung jet) in usb to use it as a 3g modem. Now after my computer crashed networkmanager does not see my phone anymore. Gammu can. bluetooth does not work anymore either, for whatever device I try. I'm using ubuntu 10.04 and networkmanager, which is the latest version (not the stable in the repos). apparently it crashes sometimes when trying to connect. how do I reset all the networkmanager configuration? bluetooth, usb, etc. I have currently no way to access internet on the computer. (HowTos)