Reported on here over a month ago that my 27" iMac was repeatedly freezing up. I'd run fsck and it would repair itself but would soon freeze again. Was advised on here to back up system and get hard drive replaced.
I purchased a back up drive and have now had a new hard drive fitted but problem has returned though not quite as bad in as much as I can now work for some hours before it freezes whereas before it could have been as little as 20 minutes.
As well as the system freezing (even force quit didn't work) also would get a dark translucent screen descending and dialogue box saying I need to restart my computer. I understand this indicates a kernel panic. David Pogue says this is almost always related to some piece of add-on hardware.
Could this be my Netgear Router which isn't actually working too smoothly (often needs to be reset, especially after computer has been inactive for long periods). Doesn't seem likely as it often used to freeze whilst using photoshop and not engaging internet). However i can't think of any other add-on it can be. The add-ons I have are an Apple keyboard and mouse, a Canon Pixma printer, an Iomega ego back up, and the Netgear DG834N router.
When it freezes and I run fsck it reports System was modified then says there were several 'Orphaned or Unlinked files'. Jettisoning Kernel Linker. Resetting IO catalogue.
I've started up from System CD and run repair on hard drive and repaired permissions.
I've noticed that when it freezes now several lines appear across the screen - like scratches.
Any thoughts before I'm forced to take it back to the local repair place (They repair Macs but are not official apple repairers)?
(This iMac was one of the first 27" intel macs. the original hard drive was replaced just within the 3-year Applecare period. The model identifier is iMac6,1. It has i intel core duo 2.33GHz processor.)
I purchased a back up drive and have now had a new hard drive fitted but problem has returned though not quite as bad in as much as I can now work for some hours before it freezes whereas before it could have been as little as 20 minutes.
As well as the system freezing (even force quit didn't work) also would get a dark translucent screen descending and dialogue box saying I need to restart my computer. I understand this indicates a kernel panic. David Pogue says this is almost always related to some piece of add-on hardware.
Could this be my Netgear Router which isn't actually working too smoothly (often needs to be reset, especially after computer has been inactive for long periods). Doesn't seem likely as it often used to freeze whilst using photoshop and not engaging internet). However i can't think of any other add-on it can be. The add-ons I have are an Apple keyboard and mouse, a Canon Pixma printer, an Iomega ego back up, and the Netgear DG834N router.
When it freezes and I run fsck it reports System was modified then says there were several 'Orphaned or Unlinked files'. Jettisoning Kernel Linker. Resetting IO catalogue.
I've started up from System CD and run repair on hard drive and repaired permissions.
I've noticed that when it freezes now several lines appear across the screen - like scratches.
Any thoughts before I'm forced to take it back to the local repair place (They repair Macs but are not official apple repairers)?
(This iMac was one of the first 27" intel macs. the original hard drive was replaced just within the 3-year Applecare period. The model identifier is iMac6,1. It has i intel core duo 2.33GHz processor.)