a) Austrians dont hate everyone obviously, whether they prefer certain people over others is another matter, but its a quite natural attitude.
b) There are prejudices and stereotypes everywhere, some are quite present in Austria indeed, but again I consider it, in limits, a healthy and natural attitude.
c) Austrians, though being brainwashed about their ethnic and historical status in the context of the German nation and Holy Roman Empire, are most likely not as brainwashed and anti-european (speaking about truly European values) as many others are, even though there are peculiarities, like those mentioned and a few others.
d) There is no particular hate against Hungarians in general, whether the story of your Hungarian acquaintance is true or not, its in no way representative.
e) Carinthia was a predominantely German region for quite some time, there were other predominantely German areas in todays Slovenia, which means Slovenia has a "very fair share" of the former Austro-Hungarian Empire and can be lucky that most of its people are in the borders of its state and that there are not the same problems as there are for Croatians, Serbians and Albanians with unclear borders.
f) This is no great victory as, like pointed out in another thread, its just another move of the populist Haider which again is a good example of clueless and value-free populists in Europe and nothing Austria-specific, with the exception of his relative success, partly being based on healthy attitudes he managed to use for his own purposes.
Compare:
Chechens deported from Austria
I would even question his motivation and call it rather "alibi actions". The real messages came from the FPÖ and he had to re-tighten politically...