Thank you, this is precisely the problem I am having. The link you posted indicates that the fix has been released in 0.48.3, but I don't see it on the official site.

How do I apply this update? I'm running Ubuntu.

Yes, even at maximum zoom they are misaligned. When I originally made the image, I drew a number of lines and things and then selected all of them and clicked "Fit page to selection" and saved it. That must be what messed up the grid alignment, because now the left edge of the grid is alig...

I had been working on an image which includes many lines snapped to the grid. I reopened the file and now the grid lines are in different locations. That is, they are not aligned with the lines that I previously drew. Does anyone know how to keep the grid lines aligned with your image?