谢谢两位的回复。
2012/7/30 Christopher Meng <cickumqt(a)gmail.com>:
正解。试试preupgrade也可以。
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Best Regards,
Christopher Meng------'Cicku'
Ambassador/Contributor of Fedora Project and Contributor of GNU.
Blog:http://cicku.me
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Best wishes,
Jason Ma