Not much I can do about the text unfortunately. About all you can do it use a standard resolution, or get lucky with your video drivers or something (ie, Works-For-Me). The problem is that text is really just one big texture, and the letters are so close together than you can end up seeing bits of other letters when you use a non-standard resolution, it's just a precision issue. This is actually a lot better than it used to be but it's certainly not perfect. The problem is that we create a rectangle clip around the letter, but the rectangle is an integer, and with the non-standard resolution it needs float percision.
Beyond waiting for the time I need to envetually fix the totally redone font code, I don't know what else to offer as a fix. The borders around normal type images was easily solved, but text is just a whole other issue.
Do post a screenshot if possible though, just to make sure the known text problem is what you are actually seeing. If it's another issue then perhaps there is more that I can do to try and resolve it.