First, sorry for my english, any suggestion is appreciated. GCC 4.1.2 shipped with Slackware 12.0 is bad for compiling qemu and VirtualBox OSE. The only solution: use a test installation, add xerces and xalan and downgrade gcc and g++ from "slackware-12.0/pasture/gcc-3.4.6". Added 30/12/2007: I discovered another problem, iasl won't compile with flex > 2.5.33 (I updated it with 2.5.35 from Slacky repository), so another downgrade to the standard slackware package. IMPORTANT NOTICE !!!!!!!! USE ONLY A TEST INSTALLATION, I'M NOT RESPONSIBLE FOR ANY DAMAGE DONE TO YOUR SYSTEM !!!!!!!! (I built the package in a virtual machine, it's slower but snapshots are the safest way to build and rebuild and rebuild to correct errors) Davide Locatelli (l.davide_AT_tiscali.it)