获取Macports的问题

我在2013年末的MBP上运行macports。我遇到macport无法下载包文件的问题。我尝试安装'git + svn'并且不仅整个依赖项解析需要花费超过一个小时，一旦完成并进入提取阶段，它找不到任何要下载的文件。我检查了safari，文件确实足够，但端口安装程序似乎无法找到它们。我也在家试过，我的mac mini在找到包装并安装它们没有问题，但MBP不能。并且mac mini在依赖性解析方面要快得多。

我没有真正找到任何东西就google了，所以我在这里结束了。我的装置一定有些奇怪，但我无法弄清楚是什么。

日志：

info:fetch --->  expat-2.1.0.tar.gz doesn't seem to exist in /opt/local/var/macports/distfiles/expat
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://osl.no.distfiles.macports.org/expat
:debug:fetch Fetching distfile failed: Connection timed out after 30003 milliseconds
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://skylink.dl.sourceforge.net/project/expat/expat/2.1.0
:debug:fetch Fetching distfile failed: Connection timed out after 30002 milliseconds
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://lil.fr.distfiles.macports.org/expat
:debug:fetch Fetching distfile failed: Connection timed out after 30004 milliseconds
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://kent.dl.sourceforge.net/project/expat/expat/2.1.0
:debug:fetch Fetching distfile failed: Connection timed out after 30001 milliseconds
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://mse.uk.distfiles.macports.org/sites/distfiles.macports.org/expat
:debug:fetch Fetching distfile failed: Connection timed out after 30003 milliseconds
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://nue.de.distfiles.macports.org/macports/distfiles/expat
:debug:fetch Fetching distfile failed: Connection timed out after 30004 milliseconds
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://fco.it.distfiles.macports.org/mirrors/macports-distfiles/expat
:debug:fetch Fetching distfile failed: Connection timed out after 30005 milliseconds
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://vorboss.dl.sourceforge.net/project/expat/expat/2.1.0
:debug:fetch Fetching distfile failed: Connection timed out after 30003 milliseconds
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://freefr.dl.sourceforge.net/project/expat/expat/2.1.0
:debug:fetch Fetching distfile failed: Connection timed out after 30005 milliseconds
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://heanet.dl.sourceforge.net/project/expat/expat/2.1.0
:debug:fetch Fetching distfile failed: Connection timed out after 30003 milliseconds
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://netassist.dl.sourceforge.net/project/expat/expat/2.1.0
:debug:fetch Fetching distfile failed: Connection timed out after 30004 milliseconds
:notice:fetch --->  Attempting to fetch expat-2.1.0.tar.gz from http://netix.dl.sourceforge.net/project/expat/expat/2.1.0
:debug:fetch Fetching distfile failed: Connection timed out after 30003 milliseconds

编辑：似乎卷曲有问题：以下不起作用：

curl http://nue.de.distfiles.macports.org 只是超时了。

问题是env var，http_proxy。不知怎的，它突然开始发挥作用。向@patrix大声呼救！