updating packages has hung

[MLT]

Trying to update but I get the following and it then just waits...

Any idea how to move the whole thing along?

Setting up mythweb (0.20-0.6ubuntu3) ...
/var/lib/dpkg/info/mythweb.postinst: 31: Syntax error: Bad substitution
dpkg: error processing mythweb (--configure):
 subprocess post-installation script returned error exit status 2
Setting up mysql-server-5.0 (5.0.22-3ubuntu1) ...
Stopping MySQL database server: mysqld.