Raspberry Pi - Made in the UK.

After I returned two Raspberries made in China again, I have now the second board "Made in the UK". A co-worker has a Raspberry from China and thus the same problems that had moved me to return: When plugging of USB devices, the device will reboot and when you reboot via a crontab entry of the USB WLAN stick is sporadically not recognized.
When the dwarf but works, everything is fine. I use a Raspberry as Media Center (XBMC) and the other to filter websites with squid3, Dansguardian and a firewall that I created with fwbuilder. When my children then the Raspberry is configured as a gateway. So unwanted pages remain inaccessible for children.
Total: supercomputer with minimal power consumption. If you have a board of UK, he is also stable.