Welcome Leapy Lizard! (is this the codename for Ubuntu 7.04 ?

)
I've had this problem as well and some others too. I don't know exactly what causes it and none of the programmers ever said a word about it. (No offense, it's probably not their fault, but wx')
I do even use 1400x1050 and I have more than enough free space on the status bar.
See
here. (Can't find the other thread right now, where someone else is reporting this as well...oh, and this is no offense to you for not searching properly.)
Also I occure some other strange gui things:
Does this happen for you too?