Just a little more (I just love the legalese stuff)
Section 7 of the end user license:
Clipart.com and the Content are made available to you "AS IS," "AS AVAILABLE," and "WITH ALL FAULTS." Clipart.com, its employees, directors, and officers, and anyone else associated with ClipArt.com
disclaims, to the fullest extent permitted by law, any and all warranties, express or implied, including without limitation warranties of merchantability, fitness for a particular purpose,
noninfringement , or that your usage of Clipart.com will be uninterrupted, error free of computer viruses or other damaging materials.
When you access and acquire Content, you do so at your risk. Clipart.com, its employees and officers, and anyone else acting on behalf of Clipart.com also disclaims any and all common-law duties, including without limitation duties of reasonable care and workmanlike effort.
Clipart.com, its employees, directors, and officers, and anyone acting on behalf of ClipArt.com make no representation or warranty as to your right to use any individual's name, likeness, and/or image appearing in the Content without first obtaining appropriate rights from such individual. You understand and acknowledge that neither Clipart.com, its employees, directors, and officers, nor anyone acting on behalf of the Clipart.com website has made any representation or warranty that Your use of Content will not infringe or violate the trademark rights of any third party, or constitute a false designation of origin or any other form of unfair competition, and (
You understand that You should seek competent counsel before using Content on or in connection with any goods or services or for any other commercial purposes.
Or to interpret "This stuff may be copyrighted and we can't give you rights to use itso you better get a fucking lawyer if anyone challenges your rights to it"
Now, you have someone challenging your rights to the logo, so you can take it down or you can be an asshole.........
Your choice