Hi guys I have the netbook acer aspire d255 with the ethernet card:

01:00.0 Ethernet controller: Atheros Communications AR8152 v1.1 Fast Ethernet (rev c1) [1]
Sometimes (very often) when booting in BTr1 (i have triple boot :P win7starter/ubuntu/bt5r1) I don't see the eth0 in ifconfig. In lspci it shows the above line [1] so the kernel finds it. The problem is that I can't use it.

When I type: ifconfig eth0 the output is:
eth0: error fetching interface information: Device not found
After many reboots the problem maybe fixed but no always. Any idea?
Thanks in advance