Strange textures and "river stripes"

[moggel]

Thanks for that last patch, it did improve things performance wise for me. However, starting with the previous patch I get these weird textures:


(link, if screen shot doesn't show: http://www.flickr.com/photos/59656722@N06/5632364803/)

Also, I constantly see another graphics "artifact" around rivers:


(link, if screen shot doesn't show: http://www.flickr.com/photos/59656722@N06/5632947102/)

These "stripes" have been there from start however so it's not related to the patches.

Is it just me or has anyone else seen these things?