[Plugin: SexyBookmarks | email, bookmark, and share buttons] Upgrade PHP Notice

Sexybookmarks (or is it WordPress itself) has a PHP upgrade notification at the top of each page. It lets me know that certain Shareoholic features may not work. This is find for me, being the administrator, but for the client who is doing the blogging, this is a pain to see. Can I disable this?

http://wordpress.org/extend/plugins/sexybookmarks/