[Bug 34640] The ksoftirqd process is running at around 25%

[moonlite]

Public bug reported:
https://launchpad.net/malone/bugs/34640

Affects: linux-source-2.6.15 kernel-image-2.6.15-18-386-di (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
I have an MSI 260 with wlan, (ipw2200) and i915 graphics. ksoftirqd is, according to top, running at around 20-25% of CPU on my system now. It sometimes goes down to zero and back to 20 a second later. 
Please request needed info from me, i don't want to spam this report with lots and lots of info you don't need.
I'll try to bug seek this later tonight and tomorrow.
Maybe this is a known problem though? Please tell me if so.
I'm running Dapper btw (i belive i selected dapper when sumitting this bug but one never knows.).