Soapdish and pixelated background

[ms45]

Hello, I took a bunch of product photos for a friend's Facebook page last weekend. Some of them turned out quite well, but there is an issue I continue to have. Firstly, here is the picture and its data:

Model:NIKON D5000
Shutter Speed:1/125 second
Aperture:F/6.3
Focal Length:50 mm
ISO Speed:320
Date Taken:Jul 23, 2011, 3:06:22 PM
Software:GIMP 2.6.3
(I *think* I used a tripod for this.)

In particular, note the deliberately low ISO speed - although a bounce flash was being used to compensate for the filtered natural light (the soapdish is sitting on a table in a kitchen next to a window with lace curtains), I felt the need to bump it up beyond 200 but didn't want the noise from a higher setting, so I thought 320 would be acceptable.

The blurring of the cinnamon sticks and the back of the dish is deliberate, but if you zoom in on the sticks, you can see they're quite pixelated. What am I doing wrong? Is this an inevitable consequence of digital photography? Is the ISO too high?

Thanks for any help you can give!

[windrider86]

Would you mind re-posting your photo? They need to be smaller than the original, 740 on the largest pleas and thank you