Hi, Running Fedora 3 and 2 on laptop. Installed ATI proprietory drivers to try to improve stability. I frequently get browser (Mozilla, Firefox, Konqueror) windows just closing. I have looked in logs and don't see any error messages. Konqueror does sometimes trap the error and produces trace - see below. I'm am very light-weight in Linux. Any meaning from the attached? Should I post the info elsewhere? Thanks Clive Using host libthread_db library "/lib/tls/libthread_db.so.1". [Thread debugging using libthread_db enabled] [New Thread -1208297792 (LWP 5922)] [KCrash handler] #4 0x024088bb in QPtrStack<DOM::NodeImpl>::deleteItem () from /usr/lib/libkhtml.so.4 #5 0x02408a8b in QPtrStack<DOM::NodeImpl>::deleteItem () from /usr/lib/libkhtml.so.4 #6 0x0247351a in QPtrVector<khtml::RenderLayer>::deleteItem () from /usr/lib/libkhtml.so.4 #7 0x0245bfe0 in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #8 0x0245bfcc in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #9 0x0245bfcc in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #10 0x0245bfcc in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #11 0x0245bfcc in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #12 0x0245bfcc in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #13 0x0245bfcc in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #14 0x0245bfcc in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #15 0x0245bfcc in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #16 0x0245bfcc in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #17 0x0245bfcc in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #18 0x0245bfcc in QValueVectorPrivate<QRect>::reserve () from /usr/lib/libkhtml.so.4 #19 0x0248d35f in non-virtual thunk to khtml::RenderSelect::~RenderSelect() () from /usr/lib/libkhtml.so.4 #20 0x08d10188 in ?? () #21 0x00000000 in ?? ()