I am running the latest version of Lighthouse, but I get the same results on the regular puppy (lastest version as of this posting)
Problem: Two vertical lines , one thin with pixels being "off" on either side of a jagged yellow line appears just to the (near the menu botton), the other much black line about 10 pixels thick slightly off center of the screen.
Hardware: Sony Vaio VGN-A270 Pentium M 1.8ghz (dothan), ati 9700m 64mb, 1gig of pc2700 ram, 1440 x 900 display. (I would give you more info but Sony's documentation sux and I am the second owner)
vertical lines on desktop.
In all probability, those lines are from a connecting ribbon cable from the laptops video connector to the lcd screen.
Opening and closing the lid on the laptop very many times eventually breaks that ribbon cable and it needs to be replaced.
A test of if this is the problem is to hook the laptop to an external monitor and see if the lines show up on an external monitor.
I went through this myself with an old Compaq laptop.
The other connecting wire pack that gives problems is the one that connects to the inverter from inside the laptop.
Opening and closing the lid on the laptop very many times eventually breaks that ribbon cable and it needs to be replaced.
A test of if this is the problem is to hook the laptop to an external monitor and see if the lines show up on an external monitor.
I went through this myself with an old Compaq laptop.
The other connecting wire pack that gives problems is the one that connects to the inverter from inside the laptop.