I made the mistake of installing Real player on my home PC about a year or so ago - within hours, I hugely regretted it. My PC went from being a reasonably stable (for Win98SE, anyways

) and speedy workhorse to being a crash-happy, sluggish nightmare. I ended up with a lot more crap on my system than just a player. I ended up with an app that hijacked all kinds of file formats (sorta like Quicktime does :? ) without my permission or knowledge.
In the end, even uninstalling Real player wasn't enough to bring my PC back to 'normal', and I ended up doing a complete format-C and reinstall.
Today, I don't subscribe to NASCAR online feeds, because they use Real Player. I strongly advise friends and family from installing Real player on their PC's. And I damn near sent my wife's new Dell laptop back to Dell for a full refund when I discovered that they had Real player installed on it!
I'm not sure exactly what Real would have to do to ever get my confidence in their product back, but thankfully, I can live quite nicely without it for now......