Someone else with my same problem and mystery
We had small holes showing in our clothes, when we started using a GE FL washer (2005). It especially was noticeable on a few of my thin cotton t-shirts. Sandy, no doubt about it, the t-shirts are thinner, though I have found better ones, shopping at TJ-Max.
These holes in my t-shirts have only happened once with our Maytag, but I am suspicious that it was the detergent type (powder Sears product) or maybe the color-safe bleach used. Maybe we aren't encountering what JohnL(Combo52) is referring to, because we use the gentle cycle more than the regular wash cycle. I have lost one or two t-shirts to these mystery holes which occur almost always in the same place - center of shirt, near the bottom front, belly button area.
Now, I avoid adding any detergents after the water level is reached with clothes added; assuring all is dissolved first before adding the clothes. But again, I don't blame it on the agitator, since overall, the Maytags have been so much better on our clothes than our FL GE. But, with the Maytags, I use the gentle cycle most of the time, and use regular for 100% cotton sheets and more rugged "threads".
..still pisses me off, that I've lost more shirts to mystery holes with the new FL GE 2005 unit than anything at all. But why are these holes produced in the same place? I contend it is weaker materials and knitting construction.