When I use the tablet in Photoshop CS4, it tracks the pen perfectly, but intermittently creates dotted lines. I cannot undo the dotted line with one CTRL+Z, so it's like the tablet is reading it as me picking up the pen, though I haven't. I did recently spill something on it and cleaned it up thoroughly, but I've spilled things on it before and it was fine. Maybe this last spill was the last straw? If anyone else has experienced this and/or can help, I would greatly appreciate it.

Computers & Internet - Wacom - Intuos - Intuos3 9x12 (WAC-PTZ930G)