Not significantly. Standard and Poors is only 1 of 3 credit-rating systems. We're still triple A on the other 2. This is basically a reaction to raising the debt ceiling, and, unfortunately, a not totally unreasonable one.
The real things to be concerned about are the unemployment rate and the low number of new jobs added. Personally, I think the thing that might turn that around would be to generate both incentives to companies (especially large corporations) to add jobs and penalties to the same for NOT creating new jobs. It's time the wealthy stop answering to the wealthy and starting being a little more concerned about the overall society they live in. How many of us are doing a job that would be better handled by 2 or 3, or even more people? If you work in a publicly-held company, the reason that every employee is expected to perform the job of more than one person is because the company answers to the stock holders, and does everything possible to look like they're cutting a profit, even if that's only achieved through lay offs, i.e., cutting costs, and to pay the stock holders as much as possible (again, lay offs are often a prime way of boosting stock holder dividends when the going gets rough).
If you can't get the private sector to do what's right to create jobs that will ultimately boost spending known to stimulate the economy, then government has a responsibility to get people to act against their own human nature (after all, we're primates and evolutionarily hard wired to vie for power and be motivated by greed). We need to reverse the Bush-era tax cuts (Obama inherited this problem -- he didn't create it). Trickle-down theory simply doesn't work. If you put more money into the hands of the wealthy by reducing their tax burden, history shows they don't put it back into the economy in a way that stimulates job growth and creation. They bank it, invest it, or purchase luxury items that require few jobs to create them. They don't put the money back into their businesses and hire more laborers. If they did, the jobless rate wouldn't be so high. If U.S. companies moved at least some production back to the U.S., even at higher costs and lower profits, jobs could be created and the economy might begin to recover. If the wealthy were taxed proportionately (or even slightly disproportionately, at least for a short term period), then perhaps the government would have the funds to create jobs that will put more people back into the work force. Remember how effective FDR's policies were for helping the U.S. through the last depression? Things like the TVA and CCC created jobs that put people back to work. We need similar endeavors more than ever today -- ones that will focus on clean energy production and reducing our dependence on oil (foreign or otherwise). The private sector, at least for now, seems to be acting short-sightedly and hasn't yet found the incentive, for the most part, to be pursuing this on its own.
Oh, and for those who are swallowing the GOP BS of "taxing the rich (or anyone) only reduces their incentives for seeking higher earnings, think about it for a minute. If my family of 4 with 2 in college can make it on less than 60K after taxes, I'm willing to bet that those making over 250K (the "wealthy") can make it on $125k after taxes just fine, thank you very much. Yes, if you make more money, you'll lose more to taxes, but you'll still have a larger income if you make more money!
Sheesh folks, we really need better education in economics for every person in this country! If you didn't get it in school, I highly recommend seeking it out know. Two good resources to start with are "The Post-American World" by Fareed Zakaria, and the recent documentary "Inside Job" (which gives a really good overview of the the deregulation of the finance industry, which ultimately led to this crisis in the first place. You can get it from Netflix.)