Hello, since upgrading to CentOS 5.2 my notebook hangs while booting with a "Kernel panic - not syncing: Fatal exception" error. Here is a screenshot: http://www.istari.de/olaf/centos/r0013878.jpg # uname -a Linux beutelsend.istari.de 2.6.18-53.1.21.el5 #1 SMP Tue May 20 09:34:18 EDT 2008 i686 i686 i386 GNU/Linux # grep kernel /etc/grub.conf kernel /vmlinuz-2.6.18-92.1.1.el5 ro root=/dev/VolGroup00/LogVol00 acpi=off noapic apm=power-off # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 5 model name : Pentium II (Deschutes) stepping : 2 cpu MHz : 266.637 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 mtrr pge mca cmov pat pse36 mmx fxsr up bogomips : 533.80 Ok, that toshiba tecra 8000 notebook is very old, but I use it as a thin client. And for that it makes a great job. I have had no such problem under CentOS 5 and 5.1. Should I stay with kernel 2.6.18-53.1.21.el5 or is there a workaround? Thank you very much. Olaf