Employer & University Names. - Use the official University and Employer Name.
Websites - Listing inappropriate URL's such as your personal website.
Fonts - Using small fonts to save space.
Lying on your resume - Careful the risks are too high.

Sending your graduate resume - After some years of job experience your resume has to be re-written.
No cover letter - Not sending a cover letter with your resume.
Non-professional email address - Your student email address does not give that professional image required when applying for a job.
Resume Keywords - Not including keywords in your resume.
Not proof-reading your resume - Always proof read your resume before sending.
Industry jargon - Do not assume that whoever reads your resume will know all the industry jargon.
Resume Format Use the right format depending on the situation
HTML formatted resume

ASCII Text resume

Email formatted resume
Chronological - Functional Choose wisely between a Chronological resume and Functional Resume
Personal Information - Keep it limited to the contact details and name

Visit cvtips.com for a lot more information on CVs, Resumes, Cover Letters and Interviews.