[Hadoop-common-user] version mismatch

hii
I use nutch 9.0 with hadoop 0.13.1. I upgrade hadoop 0.14.1 this morning (
i installed it diffrent directory) than I try to crawl some site with nutch
but i get this error message every try??

07/09/10 16:13:53 FATAL crawl.Injector: Injector:
java.lang.RuntimeException: org.apache.hadoop.ipc.RPC$VersionMismatch:
Protocol org.apache.hadoop.dfs.ClientProtocol version mismatch. (client = 9,
server = 14)
at
org.apache.hadoop.mapred.JobConf.getWorkingDirectory(JobConf.java:252)
at org.apache.hadoop.mapred.JobConf.setInputPath(JobConf.java:155)
at org.apache.nutch.crawl.Injector.inject(Injector.java:154)
at org.apache.nutch.crawl.Injector.run(Injector.java:192)
at org.apache.hadoop.util.ToolBase.doMain(ToolBase.java:189)
at org.apache.nutch.crawl.Injector.main(Injector.java:182)