Initially the only schools that are going to buy this version of the RasPberry Pi in any large numbers will typically a) have a Head of ICT/Computing who has qualifications in and/or industry experience of computing b) have a Head Teacher who supports the teaching of computing c) have an understanding and helpful network manager. Each of these things is currently rare: coming across all three in the same school would be like being hit on the head by a meteorite as you went to collect your Lotto jackpot, and waking from surgery to find that the anaesthetist was your long lost identical twin. For most schools, signing up to teach GCSE Computing for the first time in a decade is a big enough step without buying in innovative, unproven hardware.
So, by definition, the schools that buy them will have thought about the existing problems and be equipped to deal with future issues - more than this, they will be contributing to the Raspberry Pi's (pedagogical) body of knowledge and creating teaching resources. Next year, as more and more schools climb aboard the Happy Computing Bus, the teething problems should have been sorted and there will be a robust teaching community using this and other tools to teach computing and computational thinking. We hope