Poles think that Austrians are ungrateful - we saved them from the Ottoman slavery (Sobieski!) and 100 years later they took part in partitioning Poland.
That was only because of the Warsaw Pact, pawian:-) Politically, Austria had little choice. Sure, it might have refused and wound up under Soviet domination like the rest of the Eastern region!
I base the above solely on the fact that the Austrians saw themselves as indeed a "buffer state"! First of all, they were and remains SOLELY Western, once again, thoroughly pro-democracy, anti-Communist on the whole (one of several reasons the current generation renounces Kreisky, both because he was a Jew as well as staunch leftist even if popular at the time with Catholic trade unions:-)).
The partition was seen by them as a bullwark against the potential fate which befell Poland, Romania, Hungary and that-time Yugoslavia.
Perhaps that's slightly over the top. Nonetheless, Vienna continued to be the transit/visa center until well after the the beginning of the Cold War, let's not forget.
Furthermore, the movie "The Third Man" was made in '49 and is considered by many to be an accurate depiction of post -War Austria at the time.