Maybe, maybe not. Without any specifics, like what is using the memory, all anyone can say is maybe. Of course Symantec is hardly above using scare tactics to peddle their crap, so the high memory use may just be a red herring designed to sell some other product. You want to come back with some specifics, we can make a better determination.
My PC is running extremely slow and Norton alerts me to a "high memory" usage alert. Is there a correlation and what can I do. I have Windows XP . . .