Wheezy: iceweasel crashes

[Hartwig Atrops <Hartwig.Atrops@arcor.de>]

Hi.

Today I run a quite basic Wheezy test install on my Sun Ultra 60.

Tasksel selection: only standard system + ssh server

+ apt-get install: 
	xorg 
	xfce4 
	xfce4-terminal 
	iceweasel 
	(+apt-file)

xfce is working so far (xfce4-terminal ok, xterm nok: black window)

iceweasel starts, but has problems with several sites:

crashing on: 
	www.spiegel.de
	www.linux-magazin.de
	www.arte.tv 
	(and some more)

sites without problem: 
	www.debian.org
	www.heise.de

What's going wrong? Any ideas?

Regards,

   Hartwig