Please, Can somebody give some advice about updating the Linux distro packets regarding ISPC?. It is recommended? I'm with Debian Wheezy and ISPC-3. I have quite Debian updates accumulated, although I have fear to do a massive update of all them. I have ISPC working quite well, and I don't wish any headache. What's the safe and common procedure regarding system updates and ISPC? Also, I don't know if upgrading the Debian distro from Wheezy to Jessie, it can force to reconfigure many ISPC things. I know these are simple questions but I don't know exactly what to do without disturbing users. Thx!
You can install the wheezy-updates (if you did not add any "additional" sources to sources.list) this should not break everything. A upgrade to jessie requiers to reconfigure ispconfig and the websites if you run apache.