If you paste images with transparency from the clipboard, all OOo programs will replace the alpha area with black colour. It works only, if you save the image (e.g. with your browser) to disk and import it back from harddisk to OOo.
Steps to reproduce:
1. Start OOo Writer for example
2. Open your browser for example Firefox and point to an PNG image with transperancy (e.g. http://upload.wikimedia.org/wikipedia/en/thumb/8/80/Wikipedia-logo-v2.svg/200px-Wikipedia-logo-v2.svg.png)
3. Copy the image in browser to clipboard
4. Paste clipoard in OOo
Image transperancy is black in OOo
Image should be with alpha channel as usual
Platform (if different from the browser):
Browser: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:16.0) Gecko/20100101 Firefox/16.0
Do not hesitate to reopen in case of mistriage.
*** This bug has been marked as a duplicate of bug 33114 ***