RE: KMEM problem with terrain
Memphian here... That anomaly is a default terrain glitch.
There are, as mentioned already, several patches to remove it and several other anomalies. But if you are using UT, then it is much enhanced if you also use any of the freeware 38m mesh sceneries. Doing so makes UT's rivers line up with the mesh valleys. It also squashes those default terrain glitches.
Terrain mesh can have its own problems and anomalies, of course, but overall it is one of the best terrain enhancements. Especially at that price. I use FSGenesis. My frequent co-pilot uses Raimondo's (hope I spelled that right). Terrain mesh is the LAST scenery enhancement that I would give up.
Hooked since FS4... now flying: FSX Acceleration on Win7/64, Core Duo E8400; GA-EP45-DS3R; GTX 460-768MB; 4G RAM; Freezer 7 Pro