current-users: UVM messages from kernel in 1.5?

Subject: UVM messages from kernel in 1.5?
To: None <current-users@netbsd.org>
From: None <explorer@flame.org>
List: current-users
Date: 02/28/2001 19:01:21

Should these scare me?

Data modified on freelist: word 0 of object 0xc0e54d30 size 4 previous type UVM 
amap (invalid addr 0xdead4d20)
Data modified on freelist: word 0 of object 0xc0e54d30 size 4 previous type UVM 
amap (0xbeef != 0xdeadbeef)
pmap_page_remove: unmanaged page?

?

NetBSD 1.5.1_ALPHA (From GENERIC-Revision: 1.354.2.9 ) #1: Sun Feb 25 00:30:25 PST 2001