I've found out that my system was running without swap (using 'free').
On a system with 256 MB RAM total, it will result in an unresponsive
system pretty quickly.
I think that there is a bug in both the feisty and gutsy kernel: you are
allowed to allocate more memory than you have when running without swap.
The vanilla kernel behaves as it should, IMHO.
** Also affects: linux-source-2.6.22 (Baltix)
Importance: Undecided
Status: New
** Also affects: linux-source-2.6.22 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-source-2.6.22 (Baltix)
Status: New => Invalid
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High load and extremely unresponsive system
https://bugs.launchpad.net/bugs/102498
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