[Gimp-user] strange horizontal cursor slippage

[stephen moss]

AMD64 Debian etch all current  updates applied.

Gimp 2.3.13 and/or 2.3.19  + gtk+-2.10.14, compiled into my user area.

When I am using a tool for cloning  painting etc my cursor will suddenly 
jump horizontally to the left.


For example the current picture is about 2250 pixels wide and the cursor 
will jump from horizontal 1500-1600 pixel point back horizontally, 
anywhere from about  500 pixels to all the way to the left margin of the 
picture.

What library would control this action so I can try an update to the 
library to fix the problem.....

Thanks
Stephen