Hello, I have just experienced an incompatibility between the new kernel version 2.6.29 and the current Virtual Box version: If you get the error message "Failed to load VMMR0.r0 (VERR_SYMBOL_NOT_FOUND)" when starting a VM the following workaroud should help: ------------------------------------------------------------------------------------ *** contrib/virtualbox/Pkgfile Sat Mar 7 00:06:45 2009 --- local/virtualbox/Pkgfile Fri Mar 27 14:51:40 2009 *************** *** 27,32 **** --- 27,35 ---- fi cd VirtualBox-${version%-*}_OSE + + sed -i 's/^..VBOX_USE_INSERT_PAGE = 1/VBOX_USE_INSERT_PAGE = 1/' src/VBox/HostDrivers/Support/linux/Makefile + # compile ./configure $QT3GUI $QT4GUI \ --disable-hardening \ ------------------------------------------------------------------------------------ Details can be found here: http://www.virtualbox.org/ticket/3403 HTH, Markus