Is it true?! Has Microsoft finally developed a reliable server solution?

No, I'm not a Apple cheerleader or a Microsoft hater; heck, I'm not even a Linux worshiper, but as a gamer, I can't help but notice that many of the servers I play on are running Linux. The one that aren't, aren't so reliable. Now, I hear that Microsoft has some people switching over for reliability against Linux. Is windows Server 2003 Reliable?