HOW TO install a previous release ?

[mephivio]

Team,

i use vestacp since october and that's really a great panel.
But since your last release 0.9.8-8 i get a lot of problems :
. statistics stops to work
. backup stops to work
. several minors troubles


Do you have a repository where i can download and use a previous release ?
Release 0.9.8-7 worked fine for me ....

Thanks for your help
ps: i'm using ubuntu 12.04 (Php 5.3 / mysql 5.5)