Wireless clients every now and then lose connection, then restore it in couple of seconds. I don't have hard data, but it seems like it started happening in the recent 2-3 weeks. Here are two dropped connections of the same client within 20 minutes. When it's connected, everything works perfectly, strong signal, no dropped packets, but then it again drops and reconnects. It's AC-68R, firmware 386.2.2.
May 30 06:43:29 syslog: wlceventd_proc_event(491): eth1: Deauth_ind A4:4E:31:1A:23:AC, status: 0, reason: Unspecified reason (1), rssi:0
May 30 06:43:37 syslog: wlceventd_proc_event(527): eth1: Auth A4:4E:31:1A:23:AC, status: Successful (0), rssi:0
May 30 06:43:37 syslog: wlceventd_proc_event(556): eth1: Assoc A4:4E:31:1A:23:AC, status: Successful (0), rssi:0
May 30 06:43:37 dnsmasq-dhcp[2332]: DHCPREQUEST(br0) 192.168.1.50 a4:4e:31:1a:23:ac
May 30 06:43:37 dnsmasq-dhcp[2332]: DHCPACK(br0) 192.168.1.50 a4:4e:31:1a:23:ac DimaLaptop
May 30 06:43:38 dnsmasq-dhcp[2332]: DHCPSOLICIT(br0) 00:01:00:01:20:f6:e3:17:28:d2:44:1e:c8:2d
May 30 07:05:44 syslog: wlceventd_proc_event(491): eth1: Deauth_ind A4:4E:31:1A:23:AC, status: 0, reason: Unspecified reason (1), rssi:0
May 30 07:05:53 syslog: wlceventd_proc_event(527): eth1: Auth A4:4E:31:1A:23:AC, status: Successful (0), rssi:0
May 30 07:05:53 syslog: wlceventd_proc_event(556): eth1: Assoc A4:4E:31:1A:23:AC, status: Successful (0), rssi:0
May 30 07:05:53 dnsmasq-dhcp[2332]: DHCPREQUEST(br0) 192.168.1.50 a4:4e:31:1a:23:ac
May 30 07:05:53 dnsmasq-dhcp[2332]: DHCPACK(br0) 192.168.1.50 a4:4e:31:1a:23:ac DimaLaptop
May 30 07:05:53 dnsmasq-dhcp[2332]: DHCPSOLICIT(br0) 00:01:00:01:20:f6:e3:17:28:d2:44:1e:c8:2d
May 30 06:43:29 syslog: wlceventd_proc_event(491): eth1: Deauth_ind A4:4E:31:1A:23:AC, status: 0, reason: Unspecified reason (1), rssi:0
May 30 06:43:37 syslog: wlceventd_proc_event(527): eth1: Auth A4:4E:31:1A:23:AC, status: Successful (0), rssi:0
May 30 06:43:37 syslog: wlceventd_proc_event(556): eth1: Assoc A4:4E:31:1A:23:AC, status: Successful (0), rssi:0
May 30 06:43:37 dnsmasq-dhcp[2332]: DHCPREQUEST(br0) 192.168.1.50 a4:4e:31:1a:23:ac
May 30 06:43:37 dnsmasq-dhcp[2332]: DHCPACK(br0) 192.168.1.50 a4:4e:31:1a:23:ac DimaLaptop
May 30 06:43:38 dnsmasq-dhcp[2332]: DHCPSOLICIT(br0) 00:01:00:01:20:f6:e3:17:28:d2:44:1e:c8:2d
May 30 07:05:44 syslog: wlceventd_proc_event(491): eth1: Deauth_ind A4:4E:31:1A:23:AC, status: 0, reason: Unspecified reason (1), rssi:0
May 30 07:05:53 syslog: wlceventd_proc_event(527): eth1: Auth A4:4E:31:1A:23:AC, status: Successful (0), rssi:0
May 30 07:05:53 syslog: wlceventd_proc_event(556): eth1: Assoc A4:4E:31:1A:23:AC, status: Successful (0), rssi:0
May 30 07:05:53 dnsmasq-dhcp[2332]: DHCPREQUEST(br0) 192.168.1.50 a4:4e:31:1a:23:ac
May 30 07:05:53 dnsmasq-dhcp[2332]: DHCPACK(br0) 192.168.1.50 a4:4e:31:1a:23:ac DimaLaptop
May 30 07:05:53 dnsmasq-dhcp[2332]: DHCPSOLICIT(br0) 00:01:00:01:20:f6:e3:17:28:d2:44:1e:c8:2d