When doing ILS approaches (that otherwise start fine, with "autoland" on and showing) on add-ons such as the PSS A320 and 777 or the Level-D 767, I often get GPWS callouts (e.g., "too low terrain") as though the plane doesn't understand that I'm in approach mode. Even worse and incredibly annoying (but likely not related to the GPWS situation), when the plane gets right above the runway, it often starts veering off course, or steeply climbing back up for no reason. And that's on approaches where the plane had otherwise been following the glideslope just fine, until the last second where the plane either touches down short of the runway, or somewhat violently climbs back up, as I said. Doesn't happen all the time, though, which is what's weird (not sure whether/what I'm doing different from one time to the next).Any thoughts on the GPWS situation? What about the botched approaches? What am I doing wrong (I assume that's what it is)? How hard can it be to just get the plane to land correctly? Thanks.[sorry for any double post, I thought I'd posted this but doesn't show.]

With the LDS 767, are you in the correct landing configuration, ie flaps at 25 or 30, gear down and at the correct Vref+5 for autolands? If you have only flap 20 or your speed is much too high you will get warnings because of too high terrain closure rate. I haven't had any warnings with the LDS 767 in that situation, (nor in the real thing) providing you operate it correctly.Colin BYou're not hitting the G/A button at all, are you?