I found some really relvent articles that I thought you would like:

The five biggest 401(k) mistakes
If you're worried about your 401(k), you have a lot of company. Our Start Investing community has a thread titled "Are you getting enough from your 401(k)?" It has attracted roughly 50 times more interest than any other discussion on that message board. MORE...http://tinyurl.com/hrcom-401k8

Seven ways to boost your 401(k) returns
This is the time of year when most of us are opening 401(k) and 403(b) statements. And we're probably a lot less grumpy than we were three years ago, because the markets have risen nicely for two years in a row. MORE...http://tinyurl.com/hrcom-401k9

Overwhelmed by 401(k) options?
Don't let a big menu of investment choices weigh you down. Your first decision to make is how much time you want to spend monitoring your plan. Because I work at Morningstar, a lot of family members and friends ask me to make recommendations for their 401(k) plans. MORE...http://tinyurl.com/hrcom-401k10