No it doesn't look like a gtk bug, as explained on IRC it hangs on a listen coming from a libcups call. Could you install libcups2-dbgsym libc6-dbg libgtk2.0-0-dbgsym and get a new backtrace?
No it doesn't look like a gtk bug, as explained on IRC it hangs on a listen coming from a libcups call. Could you install libcups2-dbgsym libc6-dbg libgtk2.0-0-dbgsym and get a new backtrace?