Yeah, but I'll bet you they weren't running Windows either. Linux? Ubuntu?
As for IE, the only browser that was a bigger pain in the hiney to design webpages for was Netscape, years ago. Microsoft has generally felt that IE never needed to be compliant with W3C specs nor handle cutting edge cascading style sheet (CSS) code, although IE9 is much closer to playing with industry standards than *shudder* IE6 and other earlier versions.
I can't be fair without pointing out that Mozilla (Firefox) also has its own version of certain CSS codes. Which means you code your page to industry standards, then write special rules for IE6+, then a few special rules for Mozilla, all the time knowing that certain parts of your design just won't be handled by any IE.
Afaik, not one of them used Windows. I heard about Linux day in and day out, but I think Ubuntu didn’t come to the forefront until after my ex and I separated. Just to be clear, he was the tech guy, and as long as he was around all I had to know was where the on/off button was. Being on my own was a rude awakening, but I’m slowly making technical inroads. ;)