我将 Debian 升级到 wheezy，但出现错误，mysql-server因此我删除了它。现在我无法重新安装它。我得到：
$ sudo apt-get install mysql-server
...
Unpacking mysql-server (from .../mysql-server_5.5.30+dfsg-1.1_all.deb) ...
Processing triggers for man-db ...
gdbm fatal: malloc error
Setting up mysql-server-5.5 (5.5.30+dfsg-1.1) ...
[FAIL] Starting MySQL database server: mysqld . . . . . . . . . . . . . . failed!
invoke-rc.d: initscript mysql, action "start" failed.
...
dpkg: error processing mysql-server (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
mysql-server-5.5
mysql-server
E: Sub-process /usr/bin/dpkg returned an error code (1)
$
（全输出http://pastebin.com/7WpSEDbx）
请注意，有些令人担忧gdbm fatal: malloc error。
我该如何回去mysql？