Mine's still alive and mostly going strong. (see sig for specs)
My mac is my main computer and it's been a really reliable workhorse.
But it hasn't always been smooth sailing.
I've only had one major issue and that was when the Western Digital 500GB hard drive died in mid-2012 and was later replaced with a Seagate 1TB. I've found that it's not as quiet as the WD and it seems *a little bit* slow. It tends to grumble and pause here and there whereas the WD never did.
Unfortunately a year ago I did a routine check in Disk Utility and was shocked to discover that the SMART status for the HDD was labelled as "
Failing". I downloaded a couple of apps to check the state of the HDD and both results concurred with Disk Utility. According to Disk Utility it's a hardware problem that cannot be repaired. The thing is that it runs fine (mostly) but due to its failing status I cannot upgrade from ML to Mavericks.
Basically it needs to be replaced
again.
It turns out that the hard drive in my mac is the notorious
Seagate ST31000528ASQ, which has A LOT of
documented issues. I thought it was pretty dodgy that the repair guy put in a POS hard drive that is well-known to have issues.
I've had some freezes from time-to-time in the last year. The screen would freeze and all input becomes unresponsive. I had originally put it down to Safari and Preview because those apps were always open when the freezing occurred. But the Console app suggests that the freezing has something to do with the video card (ATI Radeon HD 2600 PRO 256MB). *shrugs* Anyway I haven't had any freezes since the middle of last year.
About a year more-or-less into the life of my imac the CPU fan started to spin fast frequently and at times roar. The strange thing is that I would be doing something hardly CPU-intensive and not have many apps open and the fan would slowly but surely speed up until it would roar for a while at 3000+ RPM and calm back down again where it would hover around the 1600-2500RPM mark, according to iStat Pro. It's been like that ever since and I just can't remember how quiet the mac was when I first got it.
It gets quite loud when I play games like HL2, Halo, Tomb Raider 8 and 9, and CS:GO too. The top lefthand side of the mac where the vent is is hot to touch whereas the middle and right of the vent is cool.
I assume there's dust on the blades of the CPU fan which might be partly to blame but it could stem from a whole host of issues. There could be dust inside the heat sinks for the CPU and GPU too. The Power Supply temp always hovers around the 80ºC mark as well. Or it could be a thermal paste issue on the CPU or GPU - from the research I did it appears to be a documented fault on the 2006 white imacs and the 2007-2009 aluminum imacs. Or it could be a dodgy heat sensor. Maybe the GPU is overheating or there could be a fault with the copper tubes connected to the heat sinks.
I don't know. But they're all plausible.
Money is tight at the moment but I will endeavour to get the HD replaced with a better one and get to the bottom of the CPU fan issue.