I got interested and tried wall and xmessage:
For me:
- wall only worked once, and the subsequent messages were ignored.
- xmessage, when invoked from the konsole, died with an error: 'Error, can not open display'.
I have, however, other ideas for you:
If you have a proxy server and it happens to be squid, then, when you are logged-in as root, you can re-configure squid to catch her requests for her favourite pages and show her your 'customised' error messages, instead.
I think you could even redirect her to some other pages - but I am not sure, as I never tried this.
However, she can anytime avoid these tricks by re-configuring the browser to not to use the proxy...

/me pokes crashed_again in the ribs with a pointy stick ... "How about you mate?" ;}

Cheers,
Tink

How about me what buddy?

lol ..... kill her login process or kill her browser's process.

that's always fun.

you can also issue beep commands. if speakers are on and soundcard is working, you can run mpg123 to play an mp3. you can run different programs and make them display on her Xterm.

that sounds like fun. i think i'll have to do that to my folks next time i catch them using my system.... lol. :-D

great times!

That was the first thing I did was kill her browser. She is online chatting with dudes and it really pisses me off.

I like your mp3 idea. I may have to record myself saying something like "I am root. Step away from the computer now!" and play it when she is on.

I was wondering what wall/xmessage are
actually doing on your machine :}

/me is always curious

Cheers,
Tink

P.S.: Thx for the affero-feedback, btw! :}

Well, that is actually funny, and also OK if you do not have time to figure out something more sophisticated, or you want to teach her how cruel life can be...

However, I would still prefer to replace some neat pictures on her favourite page with less neat ones.
Until she suspects there must be something wrong with that page...