Any time there is a curve box thingy, like for changing values of things the line does not show up… all it shows is the end dots. It does this in both 2.46 and in 2.47. Any clue what is going on?
you mean a slider? just click in the middle of the field and move your mouse from right to left or left to right to change the value.
If you are referring to items like the RGB curves in Nodes, it is likley an issue with your video card. I cannot see the curves (but can see the points) in nodes, when using a machine with an Intel integrated video card. However, they all work find on my machine with an Nvidia card. You could try updating your video card drivers to see if that fixes the issue.