I had the following error updating Debian sarge:

snip...

Hit http://security.debian.org testing/updates/non-free Release
Reading Package Lists... Error!
E: Dynamic MMap ran out of room
E: Error occured while processing python2.2-textwrap (NewVersion1)
E: Problem with MergeList /var/lib/apt/lists/security.debian.org_dists_stable_updates_main_binary-i386_Packages
E: The package lists or status file could not be parsed or opened.

...snip

This is the solution:

edit /etc/apt/apt.conf and enter the line:

APT::Cache-Limit 16777216;

wget is probably banned.

Add -U NoSuchBrowser/1.0 and it will work fine :)

MySQL support for php-4 fails after "Debian Sarge" security upgrade

Edit the file:
/etc/php4/apache2/php.ini

- uncomment the line:
extension=mysql.so

Restart Apache