I'm not sure of the veracity of this Hungarian custom, but I was in Budapest in 1993 and was advised by a local that it was improper to toast with beer in Hungary -- with wine or spirits, yes, but not with beer. I was drinking Czech pilsner at the time, by the way, the real Budweiser.
The reason? It seems that during Hungary's war of independence from Austria in the late 1840s, Austrian soldiers were given a beer for every Magyar soldier they killed.
Anyway, not sure if it's true -- I've spoken to other people of Hungarian descent who hadn't heard of this -- but consider yourselves cautioned.