Hi Jonathan Have you tried another keyboard/mouse? It also sounds like it could be a RAM issue (usually when the cursor freezes it's RAM). I'd say leave it for 24 hours, then force-shutdown and try booting up again.
Regards Sam MacAmbulance Providing affordable Apple & PC services Sam Mullen 07747 778022 http://www.macambulance.co.uk i...@macambulance.co.uk On 8 Oct 2012, at 11:15, Jonathan Brady <laddymcb...@gmail.com> wrote: > Hello all. > > My iMac seems to have completely frozen insofar that the screen has gone > black and will not respond to either keystrokes or mouse clicks. I have a > Drobo attached to it which houses my substantial Aperture library. The > Aperture library was/is in the process of rebuilding itself following > Aperture deciding to unexpectedly quit yesterday in the middle of upgrading > said library in order for it to be compatible with the software's latest > version. Nothing particularly unusual was happening when my iMac froze just > now. Aperture was sorting itself out in the background and I was running > safari, skype, mail, and ical - nothing too taxing. All of a sudden a video > I was watching on Safari froze and although I could move the mouse around the > screen there was no response from clicking it and I could not switch between > applications either by using the mouse or by using command-tab. The drobo is > still whirring away leading me to believe it is still doing the Aperture work > it was doing at the time. However, the screen is now black and I believe > this may be just a result of it going to sleep. Nevertheless, I cannot wake > it. I am tempted to force the iMac to shutdown by holding down the power > button and then restarting it. Someone please tell me if this is a good or > potentially very very bad idea. > > Thanks in advance. > > Jonathan Brady > Photography, Multimedia, Video > tel: +44(0) 7931 541 489 > Twitter: @HiredGunJB > LinkedIn: http://uk.linkedin.com/in/jmebrady > web: http://www.jonathanbrady.net > email: jmebr...@mac.com > > -- > You received this message because you are subscribed to the Google Groups > "Sussex Mac User Group" group. > To post to this group, send an email to smug@googlegroups.com. > To unsubscribe from this group, send email to > smug+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/smug?hl=en-GB. > -- You received this message because you are subscribed to the Google Groups "Sussex Mac User Group" group. To post to this group, send an email to smug@googlegroups.com. To unsubscribe from this group, send email to smug+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/smug?hl=en-GB.