I was going to suggest trying with another monitor. It is not just Vista the affected OS. At work, we updated IE to version 7, and we had a user with a similar problem (though most of her fonts were blue, going to green). When we tried with a different monitor the "effect" was not there. So we played with the refresh rates until we found one that did not make that effect. In our case it was 75. Also, the monitor was already a LCD