Not odd. In fact, this is the most common aspect ratio for widescreen computer LCD monitors.
Since they are 16:10, when playing 16:9 (1.78:1) video thin black bars will be present at the top and bottom of the screen. This is normal unless you can set your video drivers to stretch the video vertically to fill the screen (I'm not advocating the use of this technique, just putting it out for info).
BTW, non-widescreen 17+" LCD monitors are usually 5:4 aspect ratio instead of a SD TV's 4:3 AR with a 1280x1024 resolution. Because of this, my 19" LCDs have thin black bars top and bottom of the screen when playing back 4:3 material and slightly bigger bars when playing 16:9 material compared to an older CRT-based monitor.
Having trouble playing back videos? I recommend: