You have:
Code:
ath0 at pci4 dev 0 function 0 "Atheros AR5424" rev 0x01: apic 2 int 19
ath0: AR5424 10.3 phy 6.1 rf 10.2 eeprom 5.3, FCC3A, address <censored>
Can you elaborate more how you configured Wifi? I mean in OpenBSD you created, modified some files related to Wifi or not? D you use ifconfig to configure Wifi? Do you use wpa_supplicant from ports (not in base install and is not needed to connect to 1 personal Wifi).
How yours router is configured? Does it have WEP, WPA or WPA2?
Please provide
Code:
ifconfig ath0
cat /etc/hostname.ath0
When problem occurs I would try to execute (as root user):
Code:
sh /etc/netstart ath0