I tried the workaround mentioned in Bug #48263 (acpi=noirq option) and
CPU is back to normal, requesting wireless / network connection no
longer freezes the kernel. This seems to be the same bug (regression).
** Changed in: linux-source-2.6.20 (Ubuntu)
Assignee: Mark Reitblatt => Ben Collins
Status: Needs Info => Confirmed
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RealTek 8139 hard-locks system on installation/modprobe
https://launchpad.net/bugs/90271
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