Of NDAs and Resumes?

TheFuzzy asks: "I was just updating my resume, and came to the sudden realization that over half of the projects I've worked on in the last 3 years are under ironclad non-disclosure agreements (NDAs) and I can't list them. This leaves me with either a slacker's resume, or makes me insert vague statements like "advised 3 Fortune 500 companies on database performance issues" which sounds rather fictional. Attempts to get clearance from these clients to use them as references get forwarded to their legal departments, never to return. Have other Slashdot readers encountered this issue? How did you deal with it? Is it particular to the database field, or is it common for other specialties as well?"