I have a similar issue with the same Task Sequence Error. Imported new Dell drivers and getting task sequence errror below. Image works great with my other workstations.
<![LOG[Error Task Sequence Manager failed to execute task sequence. Code 0x80004005]LOG]!><time="18:58:02.303+300" date="03-12-2013" component="TSManager" context="" type="3" thread="1560" file="tsmanager.cpp:671"> <![LOG[sending error status message]LOG]!><time="18:58:02.303+300" date="03-12-2013" component="TSManager" context="" type="1" thread="1560" file="tsmanager.cpp:672">
<![LOG[MP server http://DAPRODSMS02.ocm.ORIXUSA.CORP. Ports 80,443. CRL=false.]LOG]!><time="18:58:02.303+300" date="03-12-2013" component="TSManager" context="" type="1" thread="1560" file="utils.cpp:4855"> <![LOG[setting authenticator]LOG]!><time="18:58:02.319+300" date="03-12-2013" component="TSManager" context="" type="1" thread="1560" file="utils.cpp:4877">
<![LOG[set authenticator in transport]LOG]!><time="18:58:02.319+300" date="03-12-2013" component="TSManager" context="" type="1" thread="1560" file="libsmsmessaging.cpp:7592">
<![LOG[sending StatusMessage]LOG]!><time="18:58:02.319+300" date="03-12-2013" component="TSManager" context="" type="1" thread="1560" file="libsmsmessaging.cpp:4020">
<![LOG[setting message signatures.]LOG]!><time="18:58:02.319+300" date="03-12-2013" component="TSManager" context="" type="0" thread="1560" file="libsmsmessaging.cpp:1292">
<![LOG[setting the authenticator.]LOG]!><time="18:58:02.319+300" date="03-12-2013" component="TSManager" context="" type="0" thread="1560" file="libsmsmessaging.cpp:1322">
<![LOG[CLibSMSMessageWinHttpTransport::Send: URL: DAPRODSMS02.ocm.ORIXUSA.CORP:80 CCM_POST /ccm_system/request]LOG]!><time="18:58:02.319+300" date="03-12-2013" component="TSManager" context="" type="1" thread="1560" file="libsmsmessaging.cpp:8422">
<![LOG[Error. Received 0x80072ee7 from WinHttpSendRequest.]LOG]!><time="18:58:02.319+300" date="03-12-2013" component="TSManager" context="" type="1" thread="1560" file="libsmsmessaging.cpp:8689">
<![LOG[unknown host (gethostbyname failed)]LOG]!><time="18:58:02.319+300" date="03-12-2013" component="TSManager" context="" type="3" thread="1560" file="libsmsmessaging.cpp:692">
<![LOG[hr, HRESULT=80072ee7 (e:\nts_sccm_release\sms\framework\osdmessaging\libsmsmessaging.cpp,8738)]LOG]!><time="18:58:02.334+300" date="03-12-2013" component="TSManager" context="" type="0" thread="1560" file="libsmsmessaging.cpp:8738">
<![LOG[sending with winhttp failed; 80072ee7]LOG]!><time="18:58:02.334+300" date="03-12-2013" component="TSManager" context="" type="3" thread="1560" file="libsmsmessaging.cpp:8738">
<![LOG[Will retry in 4 second(s)]LOG]!><time="18:58:02.334+300" date="03-12-2013" component="TSManager" context="" type="2" thread="1560" file="libsmsmessaging.cpp:1830">
<![LOG[Retrying...]LOG]!><time="18:58:07.046+300" date="03-12-2013" component="TSManager" context="" type="2" thread="1560" file="libsmsmessaging.cpp:1834">
<![LOG[CLibSMSMessageWinHttpTransport::Send: URL: DAPRODSMS02.ocm.ORIXUSA.CORP:80 CCM_POST /ccm_system/request]LOG]!><time="18:58:07.046+300" date="03-12-2013" component="TSManager" context="" type="1" thread="1560" file="libsmsmessaging.cpp:8422">
<![LOG[Error. Received 0x80072ee7 from WinHttpSendRequest.]LOG]!><time="18:58:07.046+300" date="03-12-2013" component="TSManager" context="" type="1" thread="1560" file="libsmsmessaging.cpp:8689">
Any help will be most appreciative.....