Mail reading problem... messages longer than a page.

If you are lookin' at some yahoo group digests for example, you might have two or three for in the header list. You get to the end of one (which is likely to be about 25 messages long for example), hit delete, or space bar onto the next one... no problem, it selects the next message, (or digest) whatever the case may be. Anyway, on mine, since Tiger, it still selects the next message, but does not go back to the top of it. It basically picks up the position of the previous message end... and goes straight to that position on the new message..... wow, this must sound confusing.... but I don't know how to explain it, which is why I haven't asked before!!

When I got the end of a digested message previously, it would go to the top of the next message, but it doesn't any more. If the first diegest had 20 messages in it and the second had 35, when it got to the end of the first one, it would start at message 20 on the second digest instead of the top of it.... Does that make it clearer?

Anyone experience the same prob? This is all plain text btw!!