Ouch. Zombie handles are so much worse. Now we're talking serious memory, and since it isn't attributed to the process that leaks the handles it is easy to not realize what is happening.
More details: as I explain in the first link in the blog post, if a process leaks process handles then roughly 64 KB of memory will be used for each leaked handle (each zombie process) but that memory will not be attributed to any process. If you have the Handles column open you will see a large count in one process, but that process will not have a large memory footprint. If you kill that process you will reclaim the memory from all of the zombies.
More details: as I explain in the first link in the blog post, if a process leaks process handles then roughly 64 KB of memory will be used for each leaked handle (each zombie process) but that memory will not be attributed to any process. If you have the Handles column open you will see a large count in one process, but that process will not have a large memory footprint. If you kill that process you will reclaim the memory from all of the zombies.
Good times.