UK 5ghz Channels Sometime Available Sometimes Not

Hi all

My mac book pro retina will sometimes connect to my 5ghz network and sometimes it will not ;

when I check the system info I see when it will not connect 5ghz that the UK channels are not supported on my Retina

Other times I boot up and they are supported ....

CRAZY stuff

See dump ; currently it will noy connect

en0:

Card Type: AirPort Extreme (0x14E4, 0xEF)

Firmware Version: Broadcom BCM43xx 1.0 (5.106.98.100.14)

MAC Address:

Locale: ETSI

Country Code: TW

Supported PHY Modes: 802.11 a/b/g/n

Supported Channels: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 56, 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 149, 153, 157, 161, 165

Wake On Wireless: Supported

AirDrop: Supported

Status: Connected

UK channels are 36,40,44,48 and as you can see they are not supported at the moment ; possibly until I reboot

anyone have any ideas

Thanks you