The National Library of Medicine has made more changes to PubMed. Limits (including language, years, ages, publication type, and others) are now found on a separate page and are no longer located on the Advanced Search page. A link to Limits is found above the search box on each PubMed page. Search History, which shows you what you have searched in this session and allows you to combine search statements, is still located on the Advanced Search page. Advanced Search also include a Search Builder which can be used to construct a search.
More information about these changes can be found in the Jan-Feb 2010 issue of the NLM Technical Bulletin.