Sorry guys, i only noticed yesterday that the site was down. Apparently for some reason (still can't tell exactly what it was) the disk space where we are hosted reached 100% and that caused the impossibility of creating new temp files, cache files and other stuff that made the website load nice and smoothly. After trying in vain to clear up some space, I contacted the hosting company and worked with the guys from support to identify a bunch of log files that made up to 5gb of disk space. We had them deleted so now we should be back without any worries that such events will happen again in the near future.