just a little refresh problem in the "Set Information" window :
in the right list where roms/size/crc32/SHA1/etc... are displayed and enough roms are listed to show the scrollbar...
when you scroll using up or down arrows or clicking in the empty spaces (between the lift and the arrows) then the list doesn't refresh its content correctly.
the list is correctly refreshed only when scrolling using keyboard or using drag'n drop of the lift.
i obtain grey horizontal lines over the roms names.

i use win xp sp2, nvidia geforce 7600gt and latest nvidia drivers 169.21