Hi Christian, I have tried your setup (Ubuntu 12.10 with MATE 1.4 in VMware) and I was able to reproduce the issue but only at a high resolution (1440x900 or higher) and only when gvim has a large screen size (80x40 or higher).
When the second file (README.txt) is opened, only the first letter of the first line is refreshed, the rest of the screen shows the previous (Filelist) content. The first letter is "R". I noticed that there is some artifact next to "R". As the cursor is moved via the keyboard the letters get updated, the whole screen ony gets refreshed with the new content when the cursor moves off screen to the next page or when the mouse wheel is rolled down. I test with Linux Mint Debian Edition and could not reproduce the issue there. Linux Mint 13 and 14 consistently reproduce the issue regardless of resolution. I noticed that gvim under Linux Mint 14 is at 7.3.547. They will most likely hit the issue in their next iteration. In the meantime I will stay at 7.3.637. Cheers. -- You received this message from the "vim_dev" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php
