frequent crash of dolphin

[Xavier Brochard <xavier@alternatif.org>]

For a few days now, Dolphin crash very often, in various circumstances. It 
can't stay open for more than 5 minutes. I'm also having problem with 
applications freezing for few seconds (iceweasel, libreoffice, kmail, 
konqueror, ...).
I don't understand what happens exactly (I suspect hal). My system is a mix 
of Sid and experimental, but I didn't install something new since november. 
Just kept my system up to date. I have:
- last packaged kde
- QT 4.7
- Libre office

I wonder if someone is having the same problem?
Any suggestion to track the problem?

regards
xavier