CRITICAL: There is a critical bug affecting MOST USERS. Upgrade ASAP.
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+--[ Redis 2.6.7 ]
+
+UPGRADE URGENCY: MODERATE (unless you BLPOP using the same key multiple times).
+
+* [BUGFIX] Don't crash if BLPOP & co are called with the same key repeated
+ multiple times (Issue #801).
+
--[ Redis 2.6.6 ]
UPGRADE URGENCY: CRITICAL if you experienced one more more crashes.