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#10549 (Sticky not working with query_posts()) – WordPress Trac
Sticky posts are included only for the front page and do not count against the total. This is by design.
PHP: ZipArchive::open - Manual
to anyone getting an error ZIPARCHIVE::ER_READ = 5, when doing $zip->open($zipfile) with a ZIP file containing a total of more then (around) 800 files (even when they are in sub-directories).
possibly related bugs 40873, 8714:
- it was not an OS limit, because it worked when called from windows via samba on the same file at the same place
- it wasn't working under 32bit linux
with php 5.3.0 the issue seems to be resolved.