iMac Core Duo: Kernel panics when using dial-up confirmed by Apple; Loud noises

Kernel panics when using dial-up confirmed by Apple Apple has confirmed with customers an issue where kernel panics ensue when attempting to use dial-up Internet access with an Apple external USB modem attached to the iMac Core Duo.

The issue implicates Apple's USB modem, part number MA034Z/A. Users experiencing this issue receive a kernel panic each time they choose "Connect" from the Internet Connect application.

MacFixIt reader Leslie received the following note from Apple's technical support department:

"(We) apologize for the inconvenience. This is the known issue, and Apple is currently working on a solution to this issue. [...] Unfortunately, Apple does not have a resolution for this issue at this time. A possible workaround would be to use a different USB modem, or perhaps an Airport base station to make the connection wireless. I would hope that Apple has a resolution soon, but I do not have a specific timeframe."

If you are experiencing a similar issue, please let us know.

Loud noises Some users are reporting inordinately loud noises being generated by their iMac Core Duo's -- particularly the 20" model with 256 MB of VRAMM.

One reader writes:

"I just purchased an iMac 20" | 500GB HD | 256MB RAM, on the basis that it was a very quiet machine. I even asked the question to several other readers and got replies like 'From all the reports I've seen, the new iMac is quieter than the old one'

"My machine is not quiet. It has a constant fan-like whirring noise which is quite audible in a room during normal use. I rang Apple Support and they told me a slight whirring noise is normal so I'm going to take it into the nearest Apple support centre and get it diagnosed. If its the upgraded graphics card causing the problem, and this is considered normal, then I'm going to return it (within the 14 day period for return)."

We're still attempting to nail down specifics on this issue, so if you are experiencing a similar problem please let us know at late-breakers@macfixit.com.

For more coverage, see our iMac Core Duo (Early 2006) special report.

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