Problemas em antena com firmware 5.1.2

Ola Boa noite Pessoal,
Seguinte tenho no meu provedor aki mais de 500 anatenas da ubiquiti instaladas, de todos os tipos, nunca tive problemas, mas agora comecei a ter alguns problemas que ja estavam instaladas a um tempo,
o problema é o seguinte o cliente perde conecxão com a repetidora, se dou um scan ele detecta a repetidora td certinho ai posso posso selecionar a rede e tudo mas ele nao sincroniza na repetidora, esse problema ja aconteceu com 5 antenas e elas estavam com firmware 5.1.2, mas depois de ter dado o problema tenteiu atualizar o firmware e nada, vou postar aki um log da antena com problemas e um log de uma antena funcionando, pra ver se alguem pode me dar uma luz

LOG ANTENA COM PROBLEMAS
Jan 14 14:42:13 Antena Camila syslog.info syslogd started: BusyBox v1.11.2
Jan 14 14:42:14 Antena Camila user.notice system: Start
Jan 14 14:42:14 Antena Camila daemon.info init: starting pid 2380, tty '/dev/null': '/bin/infctld -m -c'
Jan 14 14:42:14 Antena Camila daemon.info init: starting pid 2384, tty '/dev/null': '/bin/dropbear -F -d /etc/persistent/dropbear_dss_host_key -r /etc/persistent/dropbear_rs
Jan 14 14:42:14 Antena Camila daemon.info init: starting pid 2385, tty '/dev/null': '/bin/wpa_supplicant -D wext -i ath0 -c /etc/wpasupplicant_WPA-PSK.conf'
Jan 14 14:42:14 Antena Camila daemon.info init: starting pid 2386, tty '/dev/null': '/bin/tinysnmpd /etc/snmp.conf /lib/tinysnmp'
Jan 14 14:42:14 Antena Camila daemon.info init: starting pid 2381, tty '/dev/null': '/bin/syslogd -n -S'
Jan 14 14:42:14 syslogd started: BusyBox v1.11.2
Jan 14 14:42:14 init: starting pid 2382, tty '/dev/null': '/usr/bin/iwevent -s'
Jan 14 14:42:14 init: starting pid 2383, tty '/dev/null': '/bin/lighttpd -D -f /etc/lighttpd.conf'
Jan 14 14:42:14 wireless: ath0 Set Mode:Managed
Jan 14 14:42:15 wpa-supplicant: Trying to associate with 00:15:6d:1c:0f:3e (SSID='PrexBy4.supernet6.com.b r' freq=5805 MHz)
Jan 14 14:42:15 wireless: ath0 Set Mode:Managed
Jan 14 14:42:15 wireless: ath0 Set Frequency:5.805 GHz (Channel 161)
Jan 14 14:42:15 wireless: ath0 Set ESSID:"PrexBy4.supernet6.com.b r"
Jan 14 14:42:15 dropbear[2384]: Not backgrounding
Jan 14 14:42:15 usb-modeswitch: 1-0:1.0: Manufacturer=Linux_2.6.15-5.2_ohci_hcd Product=AR7240_OHCI Serial=ar7240_usb
Jan 14 14:42:15 usb-3g: 1-0:1.0: 0000:0000 Manufacturer=Linux_2.6.15-5.2_ohci_hcd Product=AR7240_OHCI Serial=ar7240_usb
Jan 14 14:42:25 wpa-supplicant: Authentication with 00:15:6d:1c:0f:3e timed out.
Jan 14 14:42:29 wpa-supplicant: Trying to associate with 00:15:6d:1c:0f:3e (SSID='PrexBy4.supernet6.com.b r' freq=5805 MHz)
Jan 14 14:42:30 wireless: ath0 Scan request completed
Jan 14 14:42:30 wireless: ath0 Set Mode:Managed
Jan 14 14:42:30 wireless: ath0 Set Frequency:5.805 GHz (Channel 161)
Jan 14 14:42:30 wireless: ath0 Set ESSID:"PrexBy4.supernet6.com.b r"
Jan 14 14:42:40 wpa-supplicant: Authentication with 00:15:6d:1c:0f:3e timed out.

LOG DA ANTENA BOA
Jan 14 14:42:14 Raphael Casa syslog.info syslogd started: BusyBox v1.11.2
Jan 14 14:42:14 Raphael Casa user.notice system: Start
Jan 14 14:42:14 Raphael Casa daemon.info init: starting pid 2382, tty '/dev/null': '/bin/wpa_supplicant -D wext -i ath0 -c /etc/wpasupplicant_WPA-PSK.conf'
Jan 14 14:42:14 Raphael Casa daemon.info init: starting pid 2383, tty '/dev/null': '/bin/tinysnmpd /etc/snmp.conf /lib/tinysnmp'
Jan 14 14:42:14 Raphael Casa daemon.info init: starting pid 2378, tty '/dev/null': '/bin/infctld -m -c -n'
Jan 14 14:42:14 Raphael Casa daemon.info init: starting pid 2379, tty '/dev/null': '/bin/syslogd -n -S'
Jan 14 14:42:14 syslogd started: BusyBox v1.11.2
Jan 14 14:42:14 init: starting pid 2380, tty '/dev/null': '/usr/bin/iwevent -s'
Jan 14 14:42:14 init: starting pid 2381, tty '/dev/null': '/bin/lighttpd -D -f /etc/lighttpd.conf'
Jan 14 14:42:15 usb-modeswitch: 1-0:1.0: Manufacturer=Linux_2.6.15-5.2_ohci_hcd Product=AR7240_OHCI Serial=ar7240_usb
Jan 14 14:42:15 wireless: ath0 Set Mode:Managed
Jan 14 14:42:15 usb-3g: 1-0:1.0: 0000:0000 Manufacturer=Linux_2.6.15-5.2_ohci_hcd Product=AR7240_OHCI Serial=ar7240_usb
Jan 14 14:42:15 wpa-supplicant: Trying to associate with 00:15:6d:1c:0f:3e (SSID='PrexBy4.supernet6.com.b r' freq=5805 MHz)
Jan 14 14:42:15 wireless: ath0 Set Mode:Managed
Jan 14 14:42:15 wpa-supplicant: Associated with 00:15:6d:1c:0f:3e
Jan 14 14:42:15 wireless: ath0 Set Frequency:5.805 GHz (Channel 161)
Jan 14 14:42:15 wireless: ath0 Set ESSID:"PrexBy4.supernet6.com.b r"
Jan 14 14:42:15 wireless: ath0 New Access Point/Cell address:00:15:6D:1C:0F:3E
Jan 14 14:42:15 wpa-supplicant: WPA: Key negotiation completed with 00:15:6d:1c:0f:3e [PTK=CCMP GTK=CCMP]
Jan 14 14:42:15 wpa-supplicant: CTRL-EVENT-CONNECTED - Connection to 00:15:6d:1c:0f:3e completed (auth) [id=0 id_str=]

Fico no aguardo vlw galera