Franklin is a charming and well-presented show which addresses age-appropriate issues in an eventually-constructive manner. Our two older children (now 6 and 7) watched Franklin for several months when they were younger, and we watched it with them.
The problem is that, for 90% of each show, Franklin and/or his friends clearly show the wrong way to address the issue at hand. Not only does Franklin always handle a situation the wrong way initially, he spends the rest of the show exaggerating the problem. Only a few minutes at the end are allowed for resolution; not enough to drive the point home. Sure, kids are kids, and they may not know how to handle situations. BUT, why not teach them to handle situations correctly in the first place? Franklin doesn't help in that regard.