SLIME/SWANK crashes when my Common Lisp code syntax is slightly wrong

If I omit a closing paren, or use the wrong string escape character, or think about Haskell,开发者_C百科 this happens:

1) Minibuffer error message

Lisp connection closed unexpectedly: connection broken by remote peer

2) SLIME stops working.

3) inferior-lisp error message:

*** - Lisp stack overflow. RESET
;; swank:close-connection: NIL

Restarting SLIME with M-x slime, then recompiling my code with C-c C-k creates the same error. So yes, I have tried turning it off and on again.

Specs:

Aquamacs 2.1 (Emacs 23.2)

Aquamacs SLIME

MacPorts CLISP 2.49

Mac OS X 10.6.4

MacBook Pro 5,1

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After using paredit I don't have these problems any more (at least the one with uneven number of parens)