2 Celt I already wrote that people have forgotten what Heroes 3 version 1.0 was like. It was full of bugs, and spells didn't work as intended, and the game would crash on the 4th week when playing multiplayer or hotseat (healing using rather dubious methods)... and so on. And the bug with the double spell, which lasted until version 3.2, really amused people.
Besides, there's no need to bash Heroes 5. It didn't crash on me even once, all scripts always worked, and all spells and abilities were normal. No glitches were noticed.