Password weirdness in Mandrake 8.1

[JJ Neff]

I changed my password in RXVT su'd root.  All was well I logged in and out
multiple times.

Assume my password is <password>1  
When my screen goes to screen saver (blank screen) which is password protected.
 I can type <password>1 and get to my desktop
BUT I can also type <password>  (1 omitted on purpose) and still get in...

Any ideas why the 1 seems to be optional?

JJN

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