I encountered problem on running
# slackpkg upgrade-all
WARNING! WARNING! WARNING! WARNING! WARNING!
One or more errors occurred while slackpkg was running.
One or more packages most likely could not be installed, or your mirror
is having problems. It's a good idea recheck your mirror and run slackpkg
found the problem came from;
Then I ran;
# slackpkg upgrade php
20:41:56 (77.78 MB/s) - `/var/cache/packages/error404.17' saved 
md5sum: /var/cache/packages/php-4.4.5-x86_64-1_slamd64_11.0.tgz: No such file or directory
ERROR - Package not installed! gpg error!
Searching NEW configuration files
No .new files found.
Tried many mirrors with same result. Please help.