XFree issue after upgrading to 2.6.5

Hi! After I upgraded today to the "kernel of the day" - kernel-source-2.6.5-8.26 and kernel-default-2.6.5-8.26, my Xserver refused to start I have the following X-related packages: XFree86-server-4.3.0.1-46 XFree86-fonts-scalable-4.3.0.1-29 XFree86-Mesa-devel-4.3.0.1-29 XFree86-Mesa-4.3.0.1-29 XFree86-devel-4.3.0.1-29 XFree86-Xvfb-4.3.0.1-29 XFree86-4.3.0.1-46 XFree86-libs-4.3.0.1-29 XFree86-Xvnc-4.3.0.1-29 XFree86-fonts-75dpi-4.3.0.1-29 sax2-vesa -p reports: Chip: 0 is -> Intel I815 00:02:0 0x8086 0x1132 PCI i810 and sax2-vesa just displays a strange trembling resterized picture Any hints???