I am 31, graduated in 2005 with my undergrad and am applying to PhD programs for Fall 2013. The biggest challenge for me was the time that has passed. My GRE scores were not stellar, they were slightly above average. It was also challenge to get strong LOR, I ended up with one academic letter and two from my career, I don't know if that will work against me, but it's the best I could do! I'm hoping that my experience will be viewed in a positive light and work to benefit me but with other applicants who have 4.0 GPA, better GRE scores and stronger academic LOR I can't help but feel the odds are stacked against me. I'm counting down the days till April 15th when this process will be over & I will at least know what the result is!
It is encouraging to read that there are others who are "older" also applying to grad school. If this round of applications doesn't end up with an acceptance I may re-take the GRE & audit some courses to get stronger LOR from professors.