Listen to Exterous.
Access your online 401k options and see if it is currently invested in a shitty, high-fee plan. If you are worried about it not growing (and this has been going on for some time), it probably has a higher percentage of bonds and annuities than is necessary. On top of that, this could be put into a highly-managed plan that has way too many fees attached to it.
Check the options (if you have options), and invest in a low-fee index fund if your main concern is growth. Depending on what your company allows, what investment companies they use, you might have an option for some low fee Indexes, through Vanguard or Fidelity. With my 403B, I can choose either TIAA or Fidelity. I went with TIAA, and on top of various TIAA options, including their own Index funds and the typical target retirement fund, I have a few Vanguard Index funds, including an institutional S&P 500 index with a 0.04 EXP ratio. ...so I put 100% contributions into that. I've had Fidelity at other institutions and they also offered a range of options, including Vanguard indexes which are generally 10x+ cheaper than others.
It would be stupid to invest out of your 401K if the company offers a match (free money is unbeatable). If the match is greater than the fees, reasonable or unreasonable, then it's very likely still a better investment.
I would be surprised if you can roll it over into a personal IRA if you are still employed at that company...but that would also likely be a poor idea. Just change the fund allocation if you can, contribute as much as you possibly can, and open up a separate IRA with Vanguard and put all of that yearly maximum contribution into another Index Fund.
remember: when the market is down, that is GOOD for you. Your money purchases more shares than they could before. If possible, this is when you want to increase contributions. The market only ever goes up in the long term.