Bus is still present in Ubuntu 10.10, acroread version 9.4.1-1maverick1. adobereader-deu version 9.4.1-1maverick1 shows the same problem.
Workaround: Maximise (Alt-Space X), then press Ctrl-L, Escape two times (go into fullscreen modus and leave it, two times). First time maximises the window vertically, second time the window is completely maximised.
Bus is still present in Ubuntu 10.10, acroread version 9.4.1-1maverick1. adobereader-deu version 9.4.1-1maverick1 shows the same problem.
Workaround: Maximise (Alt-Space X), then press Ctrl-L, Escape two times (go into fullscreen modus and leave it, two times). First time maximises the window vertically, second time the window is completely maximised.