One of our users is experiencing disconnects and we see the following logs on the client around the time of the disconnect. Interestingly this usually happens 5-7 mins after the hourly TLS key negotiation. I understand from the FAQ that this is usually related to UDP packets being dropped due to network congestion/latency issues. However this is happening from multiple locations so it would seem not to be network related. Is there any other cause that anyone is aware of or any config directives that may mitigate the problem?
Apr 21 12:03:12 openvpn[20207]: Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 2048 bit RSA
Apr 21 12:05:55 openvpn[20207]: PID_ERR replay-window backtrack occurred [1] [SSL-7] [0_00000000011111111111111111111111111122222222222222333333333333] 0:1775 0:1774 t=1366995955[0] r=[0,64,15,1,1] sl=[17,64,64,528]
Apr 21 12:08:29 openvpn[20207]: PID_ERR replay-window backtrack occurred [2] [SSL-7] [0__0000000000000111111111111111111111111111111111111111111112222] 0:7832 0:7830 t=1366996109[0] r=[0,64,15,2,1] sl=[40,64,64,528]
Apr 21 12:08:29 openvpn[20207]: PID_ERR replay-window backtrack occurred [3] [SSL-7] [0___000000000000000000000000000000000001111111111111111111111111] 0:7855 0:7852 t=1366996109[0] r=[0,64,15,3,1] sl=[17,64,64,528]
Apr 21 12:08:32 openvpn[20207]: PID_ERR replay-window backtrack occurred [4] [SSL-7] [0000_00000000000033333333333333333333333333333333333333333333333] 0:7885 0:7881 t=1366996112[0] r=[-3,64,15,4,1] sl=[51,64,64,528]
Apr 21 12:27:36 openvpn[20207]: PID_ERR replay-window backtrack occurred [6] [SSL-7] [000__0_000000000000000000000000000000000000000000000000000000000] 0:85417 0:85411 t=1366997256[0] r=[-1,64,15,6,1] sl=[23,64,64,528
