Modem Connection Problem

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http://askubuntu.com – I am using Ubuntu 12.10 on my Dell Vostro laptop. I have connected a Micromax usb 3G modem to it. After a few seconds, an error message comes up Ubuntu has experienced some internal error. In the details it says 'usb_modeswitch_dispatcher'. I can not use it for internet connection. Is there any solutions? (HowTos)