在终端更新源时会出错！！！提示如下

[Terminator8100]

Reading package lists... Error!
E: Dynamic MMap ran out of room
E: Error occurred while processing gimp-dbg (NewVersion1)
E: Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_dapper-security_universe_binary-i386_Packages
E: The package lists or status file could not be parsed or opened.
root@ongbak:~#

请问老鸟这是什么问题阿？？如何解决呢？