This may help a bit :
http://forums.itrc.hp.com/cm/Questio...9cd0f9,00.html
You may need to register. Don't worry, it's free, and more than worth the time!
In my very limited HP-UX experience, you will see that in HP-UX versions up to 11. I also found a way of disabling that via a google search, but don't think that would be all that good an idea...
I'm very possibly wrong, but I don't think it should hurt much, unless you are doing a very intensive I/O process...
The HP workstation I just bought ($25 on eBay! Everything but the monitor w/ HP-UX 10.20!!), has about 20 of those processes running right now, and the box is mostly idle...
What do the more UX-versed folks say about this?