I have a server with 4 cores, 100 GB SSD and 2 GB of RAM. clamd keeps crashing and on a couple of occasions the domain server too. is 2GB enough? I have 7 sites active. My provider expects me to upgrade the whole server giving me 6 processors and 150GB SSD to get a further 2GB of RAM, I only use 15 GB of SSD and 0.2% of processor currently.