Can those experiencing this issue try booting with the following kernel boot option:
nohz=off
This disables the 'tickless' aspect of the tickless kernel (enabled by default in Gutsy & perhaps other releases). ksoftirqd appears to be getting bombarded by by requests (probably from not quite fully polished hardware drivers). This won't fix any hardware driver issues but may stop the CPU being bothered so much by errant requests.
Can those experiencing this issue try booting with the following kernel boot option:
nohz=off
This disables the 'tickless' aspect of the tickless kernel (enabled by default in Gutsy & perhaps other releases). ksoftirqd appears to be getting bombarded by by requests (probably from not quite fully polished hardware drivers). This won't fix any hardware driver issues but may stop the CPU being bothered so much by errant requests.