PCB设计疑问求解

上周三,一上班发现电脑坏了.查了半天发现竟然是才用了一年多的华硕P4E主板坏了,而且竟然是主板上生了铜锈!!
言归正传,留意之下,发现电脑主板的一些布线很有意思,比如蛇形走线.还有一些走线故意走的歪歪扭扭.有哪位PCB布线高手给说说这么做的原因如何?先谢了.
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