STRIKE Steven you are GREAT :)) I boot the system with the old kernel, download the new linux-header-files and start /usr/bin/vmware-config-tools.pl, but it dont work. I have ESXi update2, and this use gcc4.1. I change the link of gcc from gcc-4.3 to gcc-4.1 and start /usr/bin/vmware-config-tools.pl again. And it works... Thx a lot Mit freundlichen Grüßen Mario Batz