There is a prize for a reader who can answer this question successfully. A really great prize. I have spent hours on google and forums looking for the answer to no avail.
I have a Lenovo X61 tablet and it is great, the finest thing. You draw on the fancy old SXGA screen, you put it in your bag, glorious. Home and away, the art stylings.
But two pieces of software (Autodesk Sketchbook Pro and Manga Studio 4 - both EX and Debut versions) share the same problem. One time in maybe 100 pen strokes pressure sensitivity is lost and the pen produces what I can only describe as an ink blot!
It occurs more frequently in MS 4 - usually when drawing something like an eye, with a little circle inside a larger one. Once it happens in one place on the screen, if I undo it will happen again and again in that same spot. It happens with far less frequency in Sketchbook Pro.
I cannot recreate the effect in Manga Studio 3, or Photoshop CS1 - which both work fine. I originally tested MS4 on another machine running XP service pack 2 (this one has XP SP3) and what I'm describing never happened there.
I suppose it could be a driver problem but I've tried a few variants of the Wacom penabled driver to no good effect. It could be a hardware problem, but it's a very strange one if it is.
Has anyone ever seen this before? Can you help? Or is it time simply to give up on computers and live under a tarpaulin on Saddleworth Moor?