IP History drop-down menu

[sKy]

Hi, does anybody know how to clear the list of previous IPs used on VNC?
Shouldn't this be a security issue...? For example; i VNC into my machine at
home whenever i can access internet points whilst i'm away, but am at various
locations most of the time and the pcs i use mainly have VNC installed so it
keeps my IP in the history. I know they would have to bypass my password but
by having my IP at hand and being acquaintances of mine they have more chance
of guessing it than brute force hacking :o

Thanks