Vpn connection breaks with hint "short read (-1): Message too long"

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http://askubuntu.com – I have duall access l2tp connection to internet through router and pptp connection to my company's local network. Network Manager connects succesfully to vpn, but when I try to get some resources from company's network(for examle, clone git repository or connect to jira's dashboard), vpn connection breaks up with message(from syslog): short read (-1): Message too long whereas connection to moinmoin wiki causing no errors. Ubuntu version: 12.10 (HowTos)