We have a funny problem

In a PHP page we have used following code:


onmouseover="window.status='hello'"

I runned the page on two diffrenet machines both runnig win XP and both with the same IE version (6.0.29).
In my surprise, on one of them, there is no status bar. But on the other one the status bar is working and the 'hello' message is shown properly.
What could be the reason?
What can we do to solve the problem?

P.S Both of them have the same screen resolution 1024*768.