Thanks Marc, but...
what about Access violation message in Ubuntu 10 (i try everything, i loose, im back with Ubuntu 9...)
Only stack adresses won't tell anyone a thing, try to recompile the ide with debug info.
Personally I would do that from a command prompt, no idea how to to from within lazarus.
Depending of you have
a) just the ide,
b) the "default" ide with all db stuff or
c) custom installed packages,
run in a command prompt in the lazarus dir (where the source is)
a) make ide OPT=-gl
b) make bigide OPT=-gl
c) make pkgide OPT=-gl
PS, copy your lazarus exe, just in case the compilation ruins it.