I'm not sure how calibre comes up with the published year '2007'. However, from going through the whole log, I think the earliest publication year is '2009' from HarperCollins. Please see attached pic below.
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Starting download
Query: title:Nightfall; authors:L. J. Smith
Running identify query with parameters:
{u'authors': [u'L. J. Smith'], u'identifiers': {}, u'timeout': 30, u'title': u'Nightfall'}
Using plugins: Goodreads, Google, Overdrive
The log from individual plugins is below
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Request extra headers: [('User-agent', 'Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.11) Gecko/20101012 Firefox/3.6.11')]
Found 1 results
Downloading from Goodreads took 7.64499998093
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Title : Nightfall
Author(s) : L. J. Smith
Publisher : HarperTeen
Tags : Young Adult, Fantasy, Romance
Series : The Vampire Diaries: The Return #1
Rating : 3.63
Published : 2009-02-10T00:00:00+00:00
Identifiers : isbn:9780061720772, goodreads:3934321
Comments : <p>SUMMARY: Elena Gilbert has been through it all: She has fallen in love, fought ghastly evil, become a vampire, died, and then returned from dead. And now, torn between the love of two vampire brothers, she must face an ominous new danger. A demon has descended on the quiet hamlet of Fell's Church and seized the minds of numerous young girls. As his power grows, it becomes frighteningly apparent that this infernal force will ultimate threaten the whole world. This enthralling trilogy series extends L.*J. Smith's teen-pleasing Vampire Diaries series. Addictive suspense.</p>
Querying: http://www.goodreads.com/search?search_type=books&search[query]=Nightfall+Smith
Goodreads book url: u'http://www.goodreads.com/book/show/3934321-nightfall'
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Found 1 results
Downloading from Overdrive took 29.4869999886
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Title : Nightfall
Author(s) : L. J. Smith
Publisher : HarperCollins
Tags : Fiction, Horror, Romance, Young Adult Fiction
Series : The Vampire Diaries: The Return #1
Language : en
Published : 2009-01-03T13:00:00+00:00
Identifiers : overdrive:2d5e943d-35c1-4714-a31a-a39222c9cc8e, isbn:9780061904110
Comments : <blockquote><p>Elena Gilbert is alive — again.</p></blockquote><p>When Elena sacrificed herself to save the two vampire brothers who love her — the handsome, brooding Stefan and the sleek and dangerous Damon — she was consigned to a fate beyond death. Until a powerful supernatural force pulled her back.</p><p>Now Elena is not <em>just</em> human. She has powers and gifts that were bestowed on her in the afterlife. What's more, her blood pulses with an overwhelming and unique force that makes her irresistible to any vampire.</p><p>Stefan wants to find a way to keep Elena safe so that they can make a life together. Damon, however, is driven by an insatiable desire for power, and wants Elena to rule as his princess. When Stefan is lured away from Fell's Church, Damon seizes his chance to convince her that he is the brother she is meant to be with. . . . </p><p>But a darkness is infiltrating the town, and Damon, always the hunter, is now the hunted; he becomes the prey of a malevolent creature that can possess him at will, and who desires not just Elena's blood but her death. </p><p><strong>The first book in a new trilogy from L. J. Smith!</strong></p>
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****************************** Google ******************************
Request extra headers: [('User-agent', 'Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.11) Gecko/20101012 Firefox/3.6.11')]
Found 5 results
Downloading from Google took 7.68000006676
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Title : Nightfall
Author(s) : Joanna Murray-smith & Monash University. Playbox Theatre Centre
Publisher : Currency Press in association with Playbox Theatre Centre, Monash University, Melbourne
Tags : Australian Drama, Drama, General, English; Irish; Scottish; Welsh
Published : 1999-12-01T10:25:09.143000+00:00
Identifiers : google:J8R0AAAACAAJ, isbn:9780868195919
Comments : The doorbell rings. They open the door. On the porch stands a young woman. Emily and Edward Kingsly have dreamt of this night for seven years. At the same time, however, they have shared the dread that their dream may turn into a nightmare. But nothing could have prepared them for the decision they must face which will change the nature of their relationship forever. Murray-Smith closely examines family, love and commitment with her characteristically sharp insight in this taut and compelling new drama.
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Title : Nightfall
Author(s) : Lisa J. Smith
Publisher : HarperTeen
Tags : Interpersonal Relations, Supernatural, Vampires, Family & Relationships, Interpersonal Relations, Fiction, Horror
Published : 2009-05-15T10:25:06.675000+00:00
Identifiers : google:aN-wx4yFNWgC, isbn:9780061720772
Comments : After returning from the afterlife, Elena is forced to battle an ancient evil when Stefan, her vampire boyfriend, goes missing.
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Title : Nightfall
Author(s) : L. J. Smith
Publisher : HarperCollins Publishers Limited
Tags : Fiction, Science Fiction, General
Published : 2010-01-01T10:25:05.973000+00:00
Identifiers : google:GJ8lQwAACAAJ, isbn:9780061990250
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Title : The Vampire Diaries: The Return: Nightfall
Author(s) : L. J. Smith
Publisher : HarperCollins
Tags : Brothers, Demoniac Possession, Horror Stories, Interpersonal Relations, Fiction, Supernatural, Vampires, Fantasy, General, Juvenile Fiction, Horror & Ghost Stories, Love & Romance, Fantasy & Magic, Horror
Published : 2009-12-23T10:25:08.354000+00:00
Identifiers : google:jesAXgTdFdoC, isbn:9780061720802
Comments : To save the two vampire brothers who love her, Elena Gilbert sacrificed her life. Now that a supernatural force has brought Elena back from the dead, all handsome, brooding Stefan wants is to keep her safe. But when he is lured away from Fell's Church, sleek, powerful Damon seizes his chance to win Elena over, unaware of the danger they're both in. A malevolent being has infiltrated the town and is growing stronger. Able to possess Damon at will, the creature is also drawn to Elena and the new power she has acquired. But it's after more than Elena's power: It thirsts for her death. Elena's story continues in shadow souls!
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Title : Andrew Gadd: Nightfall
Author(s) : Edward Lucie-smith & Thomas Agnew (london)
Publisher : Agnew's
Published : 1998-05-15T10:25:10.206000+00:00
Identifiers : google:JhPjSAAACAAJ
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The identify phase took 29.63 seconds
The longest time (29.487000) was taken by: Overdrive
Merging results from different sources and finding earliest publication dates
We have 3 merged results, merging took: 0.00 seconds