I have this issue on a T43p with Kubuntu Dapper. I'm not sure why this problem is, but it stopped after I switched WLAN on again. When I turned it back off cpu utilisation was very high again.
I also just setup the laptop and noticed that it does not use linux-686, so i'm not sure if this has something to do with the problem. Btw: Why does ubuntu install kernels for such old systems by default?? ** Attachment added: "uname -a, lspci, lsmod" http://librarian.launchpad.net/4227778/MySys -- ksoftirqd/0 takes all the CPU power https://launchpad.net/bugs/17599 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs