Noisy fan?

When was the build date of your truck? I ask because had mine built in 03/06, w/ delivery in April '06.
I have been reading the different problems that folks have encountered over the last few months and I think maybe my trruck was built with all of these little problems corrected.
Could it be that the bugs were all worked out through the first 10 months of production, and when I ordered my H3, in March '06, the corrective measures were aleady put into place?
I did test drive the '07 H3, and except for the Engine change, My truck seems to resemble the '07 design, which is to say that the factory did it right and didn't feel the need to alter the '06 tooling.