Do you develop on GitHub? You can keep using GitHub but automatically sync your GitHub releases to SourceForge quickly and easily with this tool so your projects have a backup location, and get your project in front of SourceForge's nearly 20 million monthly users. It takes less than a minute. Get new users downloading your project releases today!
According to GlobalSign (one of the largest CA's), they stopped issuing 1024bit keys back in 2010... The lowest encryption they (and most CA's) use now is 2048bits.
https://www.globalsign.com/support/faq/sslfaq.php
All orders placed from November 29th 2010 will only be accepted with a CSR key length of 2048 bits or higher. This is to fully comply with the National Institute of Standards and Technology Recommendations (NIST) and the mandatory requirements by Microsoft's Root Certificate Program to issue Certificates from a minimum of 2048 bits by January 1, 2011.
Maybe it's related to the Y1969 bug:)