There have been a lot of folk who've replied over the weekend. Thanks.

Just to clarify, the problem is not that the new kernels boot slowly.

The problem is that the whole system runs slowly.

Someone said that 70 seconds was not slow for some systems. Yes. That's how long it takes for a complete boot for me on the OLD kernel. The 50 seconds time is to get the the first stage of the boot under the NEW kernel. The full boot time takes around 8 MINUTES!

Logging in is similarly painfully slow.

Starting up a terminal is similarly painfully slow. (20ish seconds to get a prompt under gnome-terminal compared to maybe 2 seconds under the old kernel!)

I tried some people's suggestions, however. Removing quiet from the grub boot up produced a whole bunch of extra messages at the start of the boot, but nothing seemed to hang at any particular point.

There's no significant problems (or differences) showing up in dmesg or the modules loaded that I can tell between the two kernels.

If folk think that the output of this bootchart tool will truly be useful, I can give it a try, but this isn't simply limited to the boot process, so I'm less confident of that.

Rahul Sundaram wrote:

...

Hi

We need to have something with

...

which to guage whether your particular boot time is too long.

http://bootchart.sf.net

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In the old days of system administration, one of the first places I would look when these slow down problems would occur is the swap space.. Is it possible your swap area became lost or corrupted? Just a thought.