Kip,
Just comparing the focus of the foreground to the background, and the fact that it was a pretty bright day, I would say that the f-stop on the shot was pretty small, and I would also guess the zoom was full wide, judging from the field of view. Therefore, your depth of field was pretty large. The planter and post in the foreground seem equally "unsharp" as the houses in the backgound. You may have a focus problem, but I don't think so. Just by looking at the picture and not having any EXIF data to go on, I would guess your camera may have the effects set to low sharpening or a custom effect with sharpening set at the minimum.
I took the liberty of downloading your full size image and tried to sharpen it. I typically use the 'high pass' filter method. I used Photoshop Elements 2.0.
If your not familiar with this method, here's a link to learn about it:
http://www.luminous-landscape.com …igh-pass-sharpening.shtml
Here's a link to the photo:
http://home.attbi.com/~dtrayers/photos/backyard.jpg
I copied the background layer to a new layer and set the blend mode to Hard Light. I then applied a High Pass filter to the layer copy and used a radius of 5. Then I set the blend opacity to 50%.
It's better, IMO.
By the way, I will only keep your picture on my web site for a week or so. If you have a problem with me hosting it at all, or with the fact I downloaded it and did some sharpening without your permission, let me know and I'll delete them from the web site as well as my hard drive immediately and offer my sincerest apologies.