The site allocating tickets for the London 2012 Anniversary Games is experiencing delays.
It comes after a similar system was criticised during the Olympics last summer, which meant people missed out on seeing the events that they wanted to.
However if you have already registered the 'Ticket Master' links and website are still working.
To try and get tickets, you must register. You can do this at British Athletics website, although it is experiencing problems at the moment.
More top news
Scotland Yard said two murder investigations have been launched following the separate incidents, which both happened in the past week.
Photos show the extraordinary surgical procedures to remove the growth.
The Met Police says 143 firearms have been handed in at stations across the capital in just seven days, including two antique machine guns.