12.04 hangs in login screen

[Chogan]

sometimes when i turn on my laptop when it arrives to login screen (where i should enter login password), if before hearing ubuntu short sound in login screen, i move my mouse or click on something, ubuntu will hang and i cannot do anything but shouting down it manually and turning on it again.
who has same experience as me?
is it a bug?
i have ubuntu 12.04.1 with unity installed on a hp pavilion notebook.

[rnerwein]

sometimes when i turn on my laptop when it arrives to login screen (where i should enter login password), if before hearing ubuntu short sound in login screen, i move my mouse or click on something, ubuntu will hang and i cannot do anything but shouting down it manually and turning on it again.
who has same experience as me?
is it a bug?
i have ubuntu 12.04.1 with unity installed on a hp pavilion notebook.

if you can reproduce it ( maus-klick before the login sound and only then) then it is a bug. developer should have a look an it.
i am running 12.04.1 but i don't like to test it. system don't like a "hard" shutdown
but if you know what will hapen when you klick before you hear the sound ---> let it be
cheers