Lots and lots of symbols interned by calc

[Leo]

Hello,

I have found the memory used by emacs goes up monotonously, for example,
my current emacs session (up for 1 day 5 hours) takes up 101M with no
visiting files. It is the third most memory hungry application right
after the browser and a pdf viewer.

I have found calc interned lots and lots of symbols (for example:
abs\(1:\), Help\ on\ Stack, etc) into obarray. To see it:

1. Emacs -q
2. M-x calc
3. C-h v obarray

I wonder is there's a bug or a fault in calc.

Cheers,

Leo