consider carefully when applying for PhDs exactly what you are looking for in a career, in science competition for jobs is fierce, there are also internal candidates for most vacancies reducing your chances. i was unemployed for six months before finding my post doc and its not what i expected, there are lots of PhD vacancies about but with no money for research people use PhDs as cheap labour. If i had my time again i would not have bothered. One good point is that you get to call yourself Dr which impresses the bank manager if no one else.