Sadly enough, the GRE can ruin your chances to get in. I just got rejected from a PhD CompLit program where I took classes and know faculty. I have a great GPA, lots of research experience, good recommendations, a nice writing sample and statement. Since I know a professor on the committee, I asked him what I could improve for future applications. He took a deep sigh and informed me that it was my GRE score that had killed my application. I'm a non-native speaker and got 540 on verbal which is not a good score BUT I always thought "oh well, the rest of my application is competitive, it will not matter". Well, it DOES. He said they had 100 applicants this year, 35 of them (among them myself) were perfectly qualified but they could only admit 4. So what's the only "objective" item from the applications that they can use to compare those 35 good candidates? Right, the GRE.
I'm not posting this to make you feel bad but it's just how it goes. I know I'll not get into a PhD program unless I get a higher GRE score. I think this is totally stupid but it's the way it is.