I''ve tried the xen kernel on Fedora 6, CentOS 5 and now I''m running Fedora 7. Each time, it seems to hang during or perhaps right after the SCSI hardware is initialized. It doesn''t panic, although it sometimes prints messages about USB devices not accepting new addresses (but not always). I am attaching my SCSI and CPU info, if anyone has a suggestion to fix or troubleshoot this I would appreciate any information. [root@DMZServer /]# ls /proc/scsi/ aic7xxx device_info gdth scsi sg [root@DMZServer /]# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 10 model name : Pentium III (Cascades) stepping : 0 cpu MHz : 701.640 cache size : 1024 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 apic mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1403.76 clflush size : 32 processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 10 model name : Pentium III (Cascades) stepping : 0 cpu MHz : 701.640 cache size : 1024 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 apic mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1403.02 clflush size : 32 processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 10 model name : Pentium III (Cascades) stepping : 0 cpu MHz : 701.640 cache size : 1024 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 apic mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1403.02 clflush size : 32 processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 10 model name : Pentium III (Cascades) stepping : 0 cpu MHz : 701.640 cache size : 1024 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 apic mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips : 1403.02 clflush size : 32