Actually it's not latest anymore coz its been a week already.But i hope it could help those who are concern:

02 June 2009: Problems accessing the online visa application system Visa4UK.
Some applicants may be experiencing problems in accessing the online application system following maintenance on 27-29 May. If users are still experiencing problems then they should either:
• Press 'Ctrl' and F5 to refresh the page
• Or access the online application system using the following web address - www.visa4uk.fco.gov.uk/ApplyNow.aspx