Hi, I would like to update my i-MSCP from 1.2.17 to 1.3.1 (Ubuntu 14.04 LTS) and I get this error message:
The following packages have unmet dependencies:
libaprutil1-dbd-mysql : Depends: libaprutil1 (= 1.5.3-1) but 1.5.3-2+deb.sury.org~precise+1 is to be installed
E: Unable to correct problems, you have held broken packages.
Any idea, Nuxwin ? 
Yes... You use a PPA from Ondřej Surý (surely for PHP) and now, you have some broken dependencies... If you use an external PPA, you must know how to manage 
How can I switch back to the original PPA-s?
I think some old update had also problem then that time this PPA was the solution...
(I not use external PPA-s from my own idea.. 
)
I can fix your setup by downgrading to offical package versions if you want. Give me an access to your server.
Fixed. Upgrade to i-MSCP 1.3.1 done. You must now go to the plugin interface and update the SpamAssassin plugin to latest version which is available in our plugin store.
For any other problem, please create a new thread.