Hello, list. The bug of RackTables 0.18.x not working on CentOS has been pinned down: https://bugzilla.redhat.com/show_bug.cgi?id=457064 http://bugs.centos.org/view.php?id=3252 http://chrisjean.com/2009/01/31/unicode-support-on-centos-52-with-php-and-pcre/ Long story short, it's trivial to fix, but RedHat prefers to leave it open in its RHEL product. CentOS folks get it copied from RHEL (and also don't fix it), and RackTables is not the first application to be impacted by this bug. A way to work around that would be to revert a part of the recent switch to uniform PCRE, namely, to employ mb_ereg() for character class matching again. For me this looks to be only a temporary measure (given, that ereg() is already deprecated) and adds undesired maintenance overhead. This is where you can help. I am looking for a RHEL user with a support contract, which they could use to push RedHat's bug 457064 to be properly fixed (and working RPM put into updates). Technically it is a very simple work, but if we could make it done, that would help a lot. -- Denis Ovsienko