Zombies processes from toolkit scripts/netprobe/etc, is it normal?

These zombie processes become an issue when they exist for more than a short period of time since this typically indicate a bug in the parent program/process, or just an uncommon decision to not reap terminated child processes. Also the presence of a few zombie process is not worrisome in itself, but may indicate a problem that would grow serious under heavier loads, especially since there is a threat of running out of process table entries, which are the process ID (PID) numbers, and not necessarily running out of system memory as others may mistakenly assume.