VCS-C randomly booting out user

[mangabay22]

Dec 26 10:16:05

tvcs: Event="Decode Error" Service="SIP" Src-ip="192.168.30.53" Src-port="1273" Dst-ip="10.54.2.2" Dst-port="5060" Detail="Bad method in request line" Protocol="TCP" Level="1" UTCTime="2013-12-26 15:16:05,881"

Dec 26 10:13:36

tvcs: Event="Decode Error" Service="SIP" Src-ip="192.168.30.53" Src-port="1235" Dst-ip="10.54.2.2" Dst-port="5060" Detail="Bad method in request line" Protocol="TCP" Level="1" UTCTime="2013-12-26 15:13:36,158"

Dec 26 10:13:02

tvcs: Event="Decode Error" Service="SIP" Src-ip="192.168.30.53" Src-port="1226" Dst-ip="10.54.2.2" Dst-port="5060" Detail="Bad method in request line" Protocol="TCP" Level="1" UTCTime="2013-12-26 15:13:02,385"

Using jabber 4.4.

Any ideas?