apparently I am usually asking something hard to answer, and that's the reason I keep'em open for quite some time. Just comment on one which you think deserves to be closed, and I'll do that if that's the case.
Q&A for professional and enthusiast programmers
Stack Exchange Network staging zone, where users come together to build new Q&A sites
Q&A for Ubuntu users and developers
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for computer enthusiasts and power users
Q&A for professional system and network administrators
Q&A for professional programmers interested in conceptual questions about software development