Hi, I'm having a problem with exchange in that IS is using most memory and it shouldn't be. Config of my server is W2K,Sp2,Dell 6350, 1GB RAM,Exchange 5.5 (SP4). When services restarted memory is ok but it becomes increasingly high over time.This server is only a public folder server and there are no mailboxes on it. I suspect it's some kind of memory leak or something but don't know what I can do to fix it, any suggestions would be greatly appreciated thanks niamh