I've been adding my experiences to bug #217815 over there, Colin King
suggested that one try different clock sources

On my machine I have hpet, acpi_pm, jiffies, and tsc as available clock
sources. hpet seems to be the default. Here are my results using the
daily from the 21st (I think...)

hpet: stalls
acpi_pm: stalls (perhaps worse than hpet)
jiffies: Works! If this does not genuinely eliminate the stalls, it at least 
makes them so short they are easily confused with normal processing.
tsc: stalls really badly, worse than hpet or acpi_pm

I'm going to test jiffies a couple more times, but the one run though
worked great! The only times that normal disc activity was interrupted
were very brief (a few seconds each) pauses while packages were being
configured. Otherwise CD-ROM or HDD was busy the entire time I would
expect it to be.

-- 
Hardy 64-bit beta and nightly alternate installation stalls
https://bugs.launchpad.net/bugs/217849
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