gtk - windows shuts down unexpectedly

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http://crunchbang.org – hello guys,i have experiencing weird problem with clean installed waldorf on one netbook and another my desktop. first one when i try to edit text with geany it shuts the window ,(desktop p4 cpu)and second when i working on eclipse, i click to close an inner window it closes itself completely without any errors.(netbook atom cpu)i  think its becasue gtk or something... i love crunchbang but this bug is so bad. ..eclipse was nicely working on crunbang 10.... (HowTos)