The patch @Heliosurge mentions comes from RSS Polling setting to use pubDate to set the date of imported topics. For me it is very relevant to this topic here because we commissioned that feature and we have that RSS Polling version installed in our server. We have thousands of imported topics with correct dates, and I fear installing the stock RSS plugin to test yesterday’s patch by @featheredtoast might break things by bringing thousands of changes to incorrect dates or something.
For what is worth, we have been running the patched version for weeks and we have imported dozens of different feeds without a single glitch. It works great and as intended.