Pion 4.0.5 is now available. We've officially removed the "beta" from 4.0 and strongly recommend that users of all previous versions upgrade to this release.

Bug fixes, since 4.0.3:

• Replay - added option to disable HTML refresh meta tags (1125)
• SnifferReactor - added new packet de-duplication feature (1126)
• SnifferReactor - increased frequency of session pruning (1141)
• SnifferReactor - high dropped packets in Windows 2008 and Mac OSX (1148)
• SnifferReactor - improved statistics to detect dropped packets (1140)
• SnifferReactor - can now only be created by admins or reactor admins (1154)
• Analytics reactors - failed to recover from certain SSL failures (1149)
• Wizard - now includes /robots.txt in default honeypot configuration (1144)
• Database Output Reactor - no longer stops if it encounters errors (974)
• TransformReactor - regression in AssignValue created empty terms (1145)
• HTTPProtocol - fixed crashes caused by truncation of UTF8 sequences (1146)
• MonitorService - improved concurrency locking and logging (1156)
• Now using i18n regex routines for HTTPProtocol & Comparisons (1147)
• Improved error handling of bad regular expressions (584)
• Fixed regression causing seg fault crashes during shutdown (1155)
• Fixed regression causing 100% CPU usage on RHEL5 32-bit (1151)
• User account changes in UI logged passwords in config.log (1152)
• Improved propagation of web service errors into UI (1153)
• Log viewer in UI only showed one event of given severity per second (1135)
• Added constraints on maximum memory usage for Linux platforms (1123)
• pmon.py now includes metric for events queued in Reaction Engine (1124)

Pion binary downloads for Redhat, Ubuntu, OSX and Windows are available at:
http://www.atomiclabs.com/pion/download.php