Bug in encode-universal-time?

[vogt@netcom.com (Christopher J. Vogt)]

I'm having a little trouble with encode-universal-time.  Sometimes it
seems to return a bogus value.  I'm runing version 2.0.1 on a Quadra 700.
When I run the code fragment below, at random times it will print out
18446743950619618816 as the encoded time.  Help?

(loop for i from 1 for j = (encode-universal-time 0 0 0 9 6 (+ 94 1900) 0)
          when (not (= j 2980108800)) do (format t "~%~d: ~d" i j))
-- 
Christopher J. Vogt vogt@netcom.com
From: El Eh, CA