Under the current economic climate, many graduates don't even find grad-level work and end up taking under-employment - the competition for the grad jobs that are out there is driving down salaries.
I also know people who 10 years after graduating are still not making £35k, although that's not specifically in the field of computer science.
The first proper result for "graduate software engineer" is Red Gate, who obviously only recruit the top graduates, but still: http://www.red-gate.com/our-company/careers/current-opportun...