VS401 - What's the problem?

Hi,

Anyone noticed that the VS401 on Saturday was delayed in Dubai for 24hrs and is only due in later this afternoon. The website confirms the delay due to "unforseen circumstances"

Also, today's VS401 is also delayed leaving Dubai until 1400 tomorrow again for "unforseen circumstances"

Anyone got any clues for these too long delays involving different aircraft.

Thanks

horburyflyer