Can't update Eclipse -

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when want update eclipse following error:

some sites not found. see error log more detail. unable connect repository http://download.eclipse.org/eclipse/updates/3.7/content.xml connection timed out: connect unable connect repository http://download.eclipse.org/releases/indigo/content.xml connection timed out: connect

the available software sites are: http://download.eclipse.org/releases/indigo , http://download.eclipse.org/eclipse/updates/3.7

the version of eclipse 3.7.2

i have set proxy with

window -> preferences general -> network connection

there filled in proxy , can update eclipse without problems.


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