From October 6-12 – USAJobs will be down for transitioning to Version 3.0. I recommend you download everything from the website – to reload after they come back online.
https://my.usajobs.gov/FeaturedArticle/FeaturedArticleContent.aspx?ArticleID=528&ArticleTypeID=1&count=5
Per their email to me:
The Office of Personnel Management is improving USAJOBS. The transition
is scheduled for October 6-12, 2011.
During the transition period nearly 5 billion rows of data will be extracted,
validated, and subjected to integrity testing to preserve the applicant
resumes, seeker profiles, and agency job postings in the current system.
Although the USAJOBS search and apply functions will be offline during this
transition period, daily transition activities status updates and general
employment information will be available on USAJOBS.gov.