今天早上升級到breezy時 , 出現以下的問題

Get:1 http://us.archive.ubuntu.com hoary/universe wxvlc 0.8.1-1ubuntu7 [311kB]
Fetched 311kB in 1s (266kB/s)
Failed to fetch http://us.archive.ubuntu.com/ubuntu...buntu7_i386.deb MD5Sum mismatch
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

所以上網去找解答
發現了這篇

The 'us.archive.ubuntu.com' mirrors are acting flaky this weekend. 
Replace each instance of them in your /etc/apt/sources.list with 
the 'archive.ubuntu.com' prefix instead. Then do an 'apt-get update' 
session and you should be back on track.

似乎是 us.archive.ubuntu.com這台有問題
/etc/apt/sources.lst改成 archive.ubuntu.com即可