Connections stalls during upload to oss.sonatype.org

I currently try to push a new release to oss.sonatype.org using maven. Doing so I encounter a lot of connection aborts:
maven-deploy-plugin:2.7:deploy (default-deploy) @ xmlui —
Uploading: https://oss.sonatype.org/service/local/staging/deploy/maven2/org/dspace/modules/xmlui/6.0-rc1/xmlui-6.0-rc1.war
Apr 22, 2016 11:17:13 PM org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute
INFO: I/O exception (java.net.SocketException) caught when processing request to

{s}->https://oss.sonatype.org:443: Broken pipe |
Apr 22, 2016 11:17:13 PM org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute
INFO: Retrying request to {s}

->https://oss.sonatype.org:443
Apr 22, 2016 11:27:14 PM org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute
INFO: I/O exception (java.net.SocketException) caught when processing request to

{s}->https://oss.sonatype.org:443: Broken pipe
Apr 22, 2016 11:27:14 PM org.apache.maven.wagon.providers.http.httpclient.impl.execchain.RetryExec execute
INFO: Retrying request to {s}

->https://oss.sonatype.org:443
47864/99889 KB

This continues like this till maven breaks up. Do you have any information about problems further than what you tweeted some hours ago (https://twitter.com/sonatype_ops/status/723549401461854208 )?