Scanner "switched off" crashes boot post performance update

Reference: http://discussions.apple.com/thread.jspa?threadID=2199212
Yesterday I installed the update "Performance Update 1.0 (Snow Leopard)" and got the grey screen of death on reboot (see reference above). Long story made short, I managed a safe mode reboot and after several trial and error attempts I finally understood that if I connect the scanner, switched OFF, through the (unpowered) USB hub, the system won't boot. OTOH, with the scanner switched ON (again through the unpowered USB hub) the system does boot.
Tonight I will
a) do a Time Machine, just to be on the safe side
b) check whether there are differences if I plug the scanner directly in the Mini (my guess would be NO)
c) check whether the scanner actually scans
d) try and install the newest Epson drivers (the scanner is a V350) to see if they fix the problem
But let me say that a peripheral should NOT be allowed to grey-crash the system on boot! Rather, the system should auto-reboot in Safe Mode and warn me about the anomaly so I can take corrective action. A post-update crash like this is something out of a Microsoft nightmare, and I think it should be fixed.
By the way, I had no trouble at all before the update, even with 10.6.1
Regards and thanks in advance for any advice you may have to offer.

You might go to the scanner mfg's website and see if there is an updated driver for it. Do you have an external drive that you could use in the future to make a bootable clone of your internal on? Having a clone is a great benefit. For example, in this case, you could just clone back to your internal--in effect, uninsatalling the performance update--assuming, of course, you didn't update your clone for a while after the update--which would be a best practice.

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Mini switches off during boot process

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Computer switches off while uploading

I have been making some changes to
http://www.lerosdiving.com/diving_pics.htm
and the template.
When I went to upload the pages 3 minutes in, the computer
made a humming
noise for a moment and then switched off (WinXP Prof, DW8 no
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I restarted, tried again, same thing. Restarted, left the
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[Two things: the PC does seem to have been running somewhat
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Secondly, there was a power cut which trashed my usb drivers
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Jo

Thanks Ian, I do indeed have an AMD processor. It's sitting
here without a
cover at the mo (PC) as I haven't had a chance to clean it
out yet. Son
visiting from UK, friends arriving tomorrow - aargh! when oh
when...
Jo
"Ian" <[email protected]> wrote in message
news:[email protected]...
> Try using task manager and see how much processor usage
you are making.
> Also what processor are you running? Some of the AMD
units are known for
> running very hot when under load. If in doubt fit a new
processor fan and
> see what happens
>
> cheers
>
> Ian
> "Josie1one" <joleros[nospam]@yahoo.com> wrote in
message
> news:[email protected]...
>> Thank you all so much for your comprehensive replies
- I really
>> appreciate it.
>> Tomorrow I am going to do everything you all
suggested - starting with a
>> thorough spring-clean, dust-buster, defrag, the lot.
>> Back in the 70s when I started working with
computers, we worked in a
>> completely dust-free environment, false ceilings and
floors. Amazing - my
>> poor little computer!
>> Thanks again.
>> Jo
>>
>> "Josie1one" <joleros[nospam]@yahoo.com> wrote
in message
>> news:[email protected]...
>>>I have been making some changes to
>>>
http://www.lerosdiving.com/diving_pics.htm
and the template.
>>> When I went to upload the pages 3 minutes in,
the computer made a
>>> humming noise for a moment and then switched off
(WinXP Prof, DW8 no
>>> updates).
>>> I restarted, tried again, same thing. Restarted,
left the computer
>>> running, ran virus checker (AntiVir) with no
adverse results and
>>> uploaded images 3 at at time (ftp via DW). PVII
IGM btw. No problem at
>>> all. Tried uploading thumbnails folder, computer
switched off.
>>> I uploaded the whole of the site a bit at a time
with no errors or
>>> problems this way.
>>> Nothing else seems to be causing the PC to
switch off in this way. Does
>>> anybody have the remotest idea what might be
causing this?
>>> [Two things: the PC does seem to have been
running somewhat slowly over
>>> the last couple of days but obviously may have
no bearing on the issue.
>>> Secondly, there was a power cut which trashed my
usb drivers yesterday
>>> including hub (no mouse/keyboard, had to use
adapter). I uninstalled and
>>> reinstalled them and all seemed fine ]
>>> Jo
>>>
>>>
>>
>>
>
>

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Airport Icon>Summary
Version 7.4.2
Wireless Mode: Create a Wireless Network
Wireless Security: WPA2 Personal
Internet Icon>Internet Connection
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Disks Icon>Disks
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Disk Icon>File Sharing
Enable File Sharing - on
Secure Shared Disks: With Airport Extreme password
Airport Disk Guest Access: Not allowed

Hi... mine crashes too, but it has to do with erasing a large amount of files.
I got my airport extreme the other day, very excited to be able to plug my 500 gb drive into it so my wife and I can back up our machines using wireless (time machine). I had already had a years worth of backup on the hard drive, and didn't realize that over the base station the way its backed up is different from when the HD is just hooked directly to the computer.
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Scanner "switched off" crashes boot post performance update

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