http://wicketstuff.org/maven/repository/
このリポジトリが壊れているようです。
rm ~/.m2/repository/rhino/js/1.6R7/* wget -P ~/.m2/repository/rhino/js/1.6R7/ http://repo1.maven.org/maven2/rhino/js/1.6R7/js-1.6R7.jar wget -P ~/.m2/repository/rhino/js/1.6R7/ http://repo1.maven.org/maven2/rhino/js/1.6R7/js-1.6R7.pom rm ~/.m2/repository/net/sf/retrotranslator/retrotranslator-runtime/1.2.1/* wget -P ~/.m2/repository/net/sf/retrotranslator/retrotranslator-runtime/1.2.1/ http://central.maven.org/maven2/net/sf/retrotranslator/retrotranslator-runtime/1.2.1/retrotranslator-runtime-1.2.1.jar wget -P ~/.m2/repository/net/sf/retrotranslator/retrotranslator-runtime/1.2.1/ http://central.maven.org/maven2/net/sf/retrotranslator/retrotranslator-runtime/1.2.1/retrotranslator-runtime-1.2.1.pom
rm -rf ~/.m2/repository/org/apache/wicket/* rm -rf ~/.m2/repository/org/wicketstuff/*
pom.xmlのリポジトリ設定から以下を消しておきましょう。
<repository> <id>maven.seasar.org</id> <name>The Seasar Foundation Maven2 Repository</name> <url>http://maven.seasar.org/maven2</url> </repository> <repository> <id>wicket-snaps</id> <url>http://wicketstuff.org/maven/repository</url> <snapshots> <enabled>true</enabled> </snapshots> <releases> <enabled>true</enabled> </releases> </repository> <repository> <id>wiquery</id> <name>wiquery wicket components</name> <url>http://wiquery.googlecode.com/svn/repo/</url> </repository>