hi
to correct this i had to edit the file in Scripts\Gecko_Implementation\GuteEditorImplementation.js
old:
... width=1 height=35 bordfer=0 src=\x27","/Images/1x1.gif\x27\x3E","\x3C...
new:
... width=1 height=30 bordfer=0 src=\x27","/Images/1x1.gif\x27\x3E","\x3C...
regards
Mehdi