This questions one of more popular and I decide to make dedicate topic about this subject. Below you can see all significant earthquakes on Earth (from 7-th magnitude by Richter scale and higher), as well as relative position of Solar System planets and the comet C/2010 X1 (Elenin). All data about earthquakes taken from the USGS site.

Magnitude 7.1 NEAR THE EAST COAST OF HONSHU, JAPAN April 07, 2011

Magnitude 9.0 NEAR THE EAST COAST OF HONSHU, JAPAN March 11, 2011

Magnitude 7.2 NEAR THE EAST COAST OF HONSHU, JAPAN March 09, 2011

Magnitude 7.2 SOUTHWESTERN PAKISTAN January 18, 2011

Magnitude 7.0 LOYALTY ISLANDS January 13, 2011

Magnitude 7.1 ARAUCANIA, CHILE January 02, 2011

Magnitude 7.0 SANTIAGO DEL ESTERO, ARGENTINA January 01, 2011

Magnitude 7.3 VANUATU REGION December 25, 2010

Magnitude 7.4 BONIN ISLANDS, JAPAN REGION December 21, 2010

Magnitude 7.7 KEPULAUAN MENTAWAI REGION, INDONESIA October 25, 2010

Magnitude 7.2 NEAR THE SOUTH COAST OF PAPUA, INDONESIA September 29, 2010

Magnitude 7.0 SOUTH ISLAND OF NEW ZEALAND September 03, 2010

Magnitude 7.1 ECUADOR August 12, 2010

Magnitude 7.3 VANUATU August 10, 2010

Magnitude 7.0 NEW BRITAIN REGION, PAPUA NEW GUINEA August 04, 2010

Magnitude 7.6 MORO GULF, MINDANAO, PHILIPPINES July 23, 2010

Magnitude 7.0 NEAR THE NORTH COAST OF PAPUA, INDONESIA June 16, 2010

Magnitude 7.8 NORTHERN SUMATRA, INDONESIA April 06, 2010

Magnitude 7.2 BAJA CALIFORNIA, MEXICO April 04, 2010

Magnitude 8.8 OFFSHORE BIO-BIO, CHILE February 27, 2010

Magnitude 7.0 HAITI REGION January 12, 2010

Magnitude 7.1 SOLOMON ISLANDS January 03, 2010

No comments,  your can make own conclusions… I just want to note that on March 11 2011, to the conjunction the comet with the Earth remained 3 days. Is it large or little time interval? I think it’s difficult to judge.