duplicate players/disconnection from whitelisting

[LoSboccacc]

Title: duplicate players/disconnection from whitelisting

Version: 3.1.2

OS: OSX

Java Version: 1.6

Description of Problem:

when I log in, two players appear on the server console; one is me, another is me[m

the second player is not on the whitelist and gets kicked, but the server actually disconnects me.

also, if I turn whitelist off, for each player connected two server slots get used.

Error Messages:

You don't have access to this server.

Error Log:

22.08 17:50:26 [Disconnect] User LoSboccacc[m has disconnected, reason: Kicked

22.08 17:50:26 [server] INFO kick LoSboccacc

22.08 17:50:23 [server] INFO §7CONSOLE whispers §cYou don't have access to this server.

22.08 17:50:23 [server] INFO [CONSOLE->LoSboccacc] §cYou don't have access to this server.

22.08 17:50:23 [server] INFO tell LoSboccacc §cYou don't have access to this server.

22.08 17:50:23 [Multicraft] No access for player LoSboccacc[m, kicking in 3000 ms

22.08 17:50:21 [server] INFO Usage: /kick <player>[m

22.08 17:50:21 [server] INFO kick 

22.08 17:50:21 [Disconnect] User LoSboccacc has disconnected, reason: unknown

22.08 17:50:21 [Disconnect] User [m has disconnected, reason: unknown

22.08 17:50:21 [Connect] User LoSboccacc[m, IP unknown

[LoSboccacc]

22.08 19:47:21 [server] INFO CONSOLE: Save complete.[m

22.08 19:47:21 [server] INFO CONSOLE: Forcing save..[m

22.08 19:47:21 [server] INFO CONSOLE: Enabling level saving..[m

looking at logs, that character appears also on other lines. maybe some codepage issue somewhere?