http://www.slackware.com/changelog/current.php?cpu=i386
Hello folks! This batch of updates includes the newly released KDE 4.2.3, but more noticeably it marks the first departure from the use of gzip for compressing Slackware packages. Instead, we will be using xz, based on the LZMA compression algorithm. xz offers better compression than even bzip2, but still offers good extraction performance (about 3 times better than bzip2 and not much slower than gzip in our testing).
KDE 4.2.3 уже упакован в новый формат ;-)