<snip> Does the box which shows up have a large semi transparent circular power switch behind the writing? And is the dialog in numerous languages? If so that is 10.2 new kernel panic dialog box. No longer should you receive a bunch of drop down script from the top of your screen. Also, upon reboot if you open "HD/Library/Logs/panic.log" it will tell you the reason for the kernel panic (all be it in cryptic computer script) but it's a start. I had the same problem with my 17" iMac and it turned out to be the RAM I had installed. </snip> That is the exact box that I am getting. I guess this means it is a kernel panic. I only used to get those drop down scripts maybe once every 3 or 4 weeks at most. Now this is becoming a daily thing with 10.2.4 Does anyone know how to decipher a panic.log? Here's the info if it is useful for anything: Unresolved kernel trap(cpu 0): 0x200 - Machine check DAR=0x10f6adf4 PC=0x00041cbc Latest crash info for cpu 0: Exception state (sv=0x11087C80) PC=0x00041CBC; MSR=0x00049030; DAR=0x10F6ADF4; DSISR=0x42000000; LR=0x00041CA0; R1=0x0A783A70; XCP=0x00000008 (0x200 - Machine check) Backtrace: 0x00041CA0 0x0002CD88 0x0025EB4C 0x0025ECF4 0x0025CF28 0x0025AA98 0x00257430 0x11996474 0x0024468C 0x0007CA0C 0x0002A28C 0x00024C00 0x00024FFC 0x00092318 0x203C3838 Kernel loadable modules in backtrace (with dependencies): com.apple.driver.ApplePMU(1.7.8)@0x1198c000 Proceeding back via exception chain: Exception state (sv=0x11087C80) previously dumped as "Latest" state. skipping... Exception state (sv=0x111A9500) PC=0x90073C48; MSR=0x0000D030; DAR=0xE06A9000; DSISR=0x42000000; LR=0x90005F90; R1=0xF0080070; XCP=0x00000030 (0xC00 - System call) Kernel version: Darwin Kernel Version 6.4: Wed Jan 29 18:50:42 PST 2003; root:xnu/xnu-344.26.obj~1/RELEASE_PPC panic(cpu 0): 0x200 - Machine check Latest stack backtrace for cpu 0: Backtrace: 0x00084FAC 0x000853DC 0x00027FA8 0x0008EE68 0x00091F78 Proceeding back via exception chain: Exception state (sv=0x11087C80) PC=0x00041CBC; MSR=0x00049030; DAR=0x10F6ADF4; DSISR=0x42000000; LR=0x00041CA0; R1=0x0A783A70; XCP=0x00000008 (0x200 - Machine check) Backtrace: 0x00041CA0 0x0002CD88 0x0025EB4C 0x0025ECF4 0x0025CF28 0x0025AA98 0x00257430 0x11996474 0x0024468C 0x0007CA0C 0x0002A28C 0x00024C00 0x00024FFC 0x00092318 0x203C3838 Kernel loadable modules in backtrace (with dependencies): com.apple.driver.ApplePMU(1.7.8)@0x1198c000 Exception state (sv=0x111A9500) PC=0x90073C48; MSR=0x0000D030; DAR=0xE06A9000; DSISR=0x42000000; LR=0x90005F90; R1=0xF0080070; XCP=0x00000030 (0xC00 - System call) Kernel version: Darwin Kernel Version 6.4: Wed Jan 29 18:50:42 PST 2003; root:xnu/xnu-344.26.obj~1/RELEASE_PPC Dave. David Crump ================================== You can reach me at: email: davecrump at mac.com www: http://homepage.mac.com/davecrump/