Gnome stops wireless

[dpet]

I cant think where to look for this problem. Perhaps someone can help
me.
	If I run kernel  2.6.16-1.2133 my ipw2200  wireless works well.  
If I use a newer kernel (such as 2133  or 2157) it works fine in level 3
text mode, but starting Gnome causes it to stop after a few  seconds or
a couple of minutes. I can't restart it except by rebooting. I don't
know why something can be so variable, and don't know where to go from
here.  As far as I can see, no logs tell me anything. Output from
ifconfig and iwconfig seem to be the same before and after this occurs.
Thanks for any suggestions.

DP
Adelaide South Australia