diff --git a/src/daemon/utils_complain.c b/src/daemon/utils_complain.c
--- /dev/null
@@ -0,0 +1,105 @@
+/**
+ * collectd - src/utils_complain.c
+ * Copyright (C) 2006-2013 Florian octo Forster
+ * Copyright (C) 2008 Sebastian tokkee Harl
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Florian octo Forster <octo at collectd.org>
+ * Sebastian tokkee Harl <sh at tokkee.org>
+ **/
+
+#include "collectd.h"
+#include "utils_complain.h"
+#include "plugin.h"
+
+/* vcomplain returns 0 if it did not report, 1 else */
+static int vcomplain (int level, c_complain_t *c,
+ const char *format, va_list ap)
+{
+ cdtime_t now;
+ char message[512];
+
+ now = cdtime ();
+
+ if (c->last + c->interval > now)
+ return 0;
+
+ c->last = now;
+
+ if (c->interval < plugin_get_interval ())
+ c->interval = plugin_get_interval ();
+ else
+ c->interval *= 2;
+
+ if (c->interval > TIME_T_TO_CDTIME_T (86400))
+ c->interval = TIME_T_TO_CDTIME_T (86400);
+
+ vsnprintf (message, sizeof (message), format, ap);
+ message[sizeof (message) - 1] = '\0';
+
+ plugin_log (level, "%s", message);
+ return 1;
+} /* vcomplain */
+
+void c_complain (int level, c_complain_t *c, const char *format, ...)
+{
+ va_list ap;
+
+ va_start (ap, format);
+ if (vcomplain (level, c, format, ap))
+ c->complained_once = 1;
+ va_end (ap);
+} /* c_complain */
+
+void c_complain_once (int level, c_complain_t *c, const char *format, ...)
+{
+ va_list ap;
+
+ if (c->complained_once)
+ return;
+
+ va_start (ap, format);
+ if (vcomplain (level, c, format, ap))
+ c->complained_once = 1;
+ va_end (ap);
+} /* c_complain_once */
+
+void c_do_release (int level, c_complain_t *c, const char *format, ...)
+{
+ char message[512];
+ va_list ap;
+
+ if (c->interval == 0)
+ return;
+
+ c->interval = 0;
+ c->complained_once = 0;
+
+ va_start (ap, format);
+ vsnprintf (message, sizeof (message), format, ap);
+ message[sizeof (message) - 1] = '\0';
+ va_end (ap);
+
+ plugin_log (level, "%s", message);
+} /* c_release */
+
+/* vim: set sw=4 ts=4 tw=78 noexpandtab : */
+