Not sure if this has already been mentioned, The tunnel will be closed next week for its annual safety excercise. It will be closed for 3 hours, between 22.00 hrs Monday 14th till 01.00 hrs Tuesday 15th. So expect a bit of a delay.
Thanks for the timely reminder 
.
If anyone wants further information, the links below go to the main site
and the pdf press release with further details of this stoppage (in French and Italian).
http://www.atmb.net/IMG/pdf_Info_stampa_12_-_18-11-2009-2.pdf