apt怎么总出错

fengwy

99% [2 Sources bzip2 0]
bzip2: Data integrity error when decompressing.
        Input file = (stdin), output file = (stdout)

It is possible that the compressed file(s) have become corrupted.
You can use the -tvv option to test integrity of such files.

You can use the `bzip2recover' program to attempt to recover
data from undamaged sections of corrupted files.

Errhttp://debian.cn99.com testing/main Sources
  Sub-process bzip2 returned an error code (2)
Hit http://debian.ustc.edu.cn testing Release
Hit http://debian.ustc.edu.cn testing/main Packages/DiffIndex
Hit http://debian.ustc.edu.cn testing/non-free Packages/DiffIndex
Hit http://debian.ustc.edu.cn testing/contrib Packages/DiffIndex
Hit http://debian.ustc.edu.cn testing/main Sources/DiffIndex
Hit http://debian.ustc.edu.cn testing/non-free Sources/DiffIndex
Hit http://debian.ustc.edu.cn testing/contrib Sources/DiffIndex
Fetched 3B in 6s (0B/s)
Failed to fetch http://debian.cn99.com/debian/di ... /source/Sources.bz2  Sub-process bzip2 returned an error code (2)
Reading package lists... Done
E: Some index files failed to download, they have been ignored, or old ones used instead.
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每次apt-get update都报这些错误

qljie

deb ftp://debian.ustc.edu.cn/debian testing main non-free contrib