Many people face the problem that their GuruPlug gets very hot. There have been many attempts to cool the device by adding a fan, a heat sink, or as I solved it by using an external fan. However, this can't be a good solution since people want to buy a device which works and which does not have to be modified. The developers at GlobalScale are now revising the GuruPlug. So far, it is not sure how the replacement will be realized. Either the people with a faulty unit will just get a new one, or the customers/resellers will get a replacement board (the daughter board) with a new power management chip (and most likely some other improvements).
As mentioned previously, my USB-ports are broken and my GuruPlug gets quite hot. Luckily, the reseller where I got my GuruPlug (NewIT from the UK) is very cooperative and they will advise their customers as soon as GlobalScale defines a delivery date for the replacement board. This means that I can keep my GuruPlug until they get the 2nd batch with the applied upgrades, and I will get a new one from the 2nd batch. Right now, I actually do not have much time for developing because I have my semester finals within the next three weeks, but whenever I have some time, I'll move to the next step: Using the GuruPlug as Gateway between the ADSL-router and my home network. The main thing I am struggling here is to find the right setting for the ADSL-router and to understand the IP-forwarding and DHCP-functionality for the LAN, but since Debian has it all within the packet management, it is only a few commands away ;)