Since our France server is the most powerful one, we mostly work on it for infrastructural upgrades. If uptime is very important for you, consider our US server, which doesn't go down nearly as much.
I just got one TS3 server from you and I'm pretty honest to say that its so annoying that every second day your service just goes to maintenance. I'm yeah right you are doing a free service but atleast don't promise a 99% uptime for now with 99% downtime instead.
:edit: It is the third time all of my friends have to move back to the old TS3 server because of this big downtime.
Also, we have noticed that our new kernel (220.127.116.11 generic) is noticeably faster than our previous one (kernel 2), and coupled with free VPS hosting, it is quite worth the downtime.