update always show some error

[William Herry]

I run apt-get update always show some error,

Get:1 http://cn.archive.ubuntu.com precise/restricted Sources [5,470 B]
99% [1 Sources bzip2 0 B] [Waiting for headers] [Waiting for headers]
[Waiting
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.

Err http://cn.archive.ubuntu.com precise/restricted
Sources
  Got a single header line over 360 chars

Fetched 194 kB in 2min 4s (1,550 B/s)
W: Failed to fetch
http://cn.archive.ubuntu.com/ubuntu/dists/precise/restricted/source/Sources
Got a single header line over 360 chars

E: Some index files failed to download. They have been ignored, or old ones
used instead.

how to solve this problem

Thanks


-- 



William Herry
====================
WilliamHerryChina at Gmail.com
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