After using Windows Live Mail for any length of time each day, I get strange looking black bars or spaces covering over email controls (like address, send, etc.) I must close the program and restart it to recover. This happens every day and is very frustrating. I am using Windows 7 Home Premium x64 on a Sony Vaio VGC-LT15E on 4GB RAM and Intel Core 2 Duo CPU 1.50GHz