diff --git a/src/log_utils.py b/src/log_utils.py
index 58b5b15..c621c8b 100644
--- a/src/log_utils.py
+++ b/src/log_utils.py
@@ -7,6 +7,7 @@ before this runs, so import order does not matter.
 
 import logging
 import os
+import re
 import sys
 
 LEVEL_ENV_VAR = "REWARDS_FARMER_LOG_LEVEL"
@@ -21,6 +22,36 @@ DEFAULT_LEVEL = "INFO"
 # default would make the output noisier than what it replaces.
 NOISY_LIBRARIES = ("httpx", "httpcore", "urllib3", "selenium")
 
+# Longest a one-line exception summary may get before it is cut. Long enough
+# for any real selenium message, short enough that a pathological one cannot
+# push a whole screen of text into a single record.
+MAX_SUMMARY_LENGTH = 300
+
+_SESSION_INFO = re.compile(r"\s*\(Session info:[^)]*\)")
+
+
+def exception_summary(exc: BaseException) -> str:
+	"""One short line describing an exception, safe to put in a log record.
+
+	str() on a selenium exception is multi-line: the message, then a session
+	info line, then the whole msedgedriver stacktrace. Only the first line is
+	worth showing in a per-task summary, and the full detail is still attached
+	as a traceback when the level is debug.
+	"""
+	text = str(exc).strip()
+
+	if not text:
+		return ""
+
+	text = _SESSION_INFO.sub("", text.splitlines()[0]).strip()
+
+	if len(text) > MAX_SUMMARY_LENGTH:
+		# ASCII, because this can land on a Windows console whose encoding
+		# cannot represent an ellipsis character.
+		text = text[:MAX_SUMMARY_LENGTH - 3].rstrip() + "..."
+
+	return text
+
 # CRITICAL is the longest level name at 8 characters, so pad to that and the
 # message column stays aligned no matter what is being logged.
 LOG_FORMAT = "%(asctime)s %(levelname)-8s %(name)s: %(message)s"
diff --git a/src/rewards_tasks.py b/src/rewards_tasks.py
index bd44190..466106c 100644
--- a/src/rewards_tasks.py
+++ b/src/rewards_tasks.py
@@ -1,4 +1,5 @@
 import logging
+import log_utils
 import os
 import random
 import time
@@ -284,12 +285,8 @@ class RewardsTaskUtils:
 			except (NoSuchElementException, TimeoutException) as exc:
 				logger.warning("[SKIP] %s: not available in this UI variant (%s)", name, type(exc).__name__)
 			except Exception as exc:
-				# A selenium exception carries the whole msedgedriver stacktrace
-				# in str(), tens of lines of it, so keep the summary to the
-				# first line and let the traceback on debug hold the rest.
-				message = str(exc).strip().splitlines()
 				logger.error(
-					"[FAIL] %s: %s: %s", name, type(exc).__name__, message[0] if message else "",
+					"[FAIL] %s: %s: %s", name, type(exc).__name__, log_utils.exception_summary(exc),
 					exc_info=logger.isEnabledFor(logging.DEBUG)
 				)
 
diff --git a/src/tab_utils.py b/src/tab_utils.py
index b007147..b6896a0 100644
--- a/src/tab_utils.py
+++ b/src/tab_utils.py
@@ -33,7 +33,7 @@ document.dispatchEvent(new Event('visibilitychange'));
 				self.driver.switch_to.window(handle)
 
 				if self.driver.current_url in GHOST_TAB_URLS:
-					logger.info("Found ghost tab with handle %s and URL %s.", handle, self.driver.current_url)
+					logger.debug("Found ghost tab with handle %s and URL %s.", handle, self.driver.current_url)
 					continue
 
 				self.ensure_focus()
@@ -50,14 +50,18 @@ document.dispatchEvent(new Event('visibilitychange'));
 				self.driver.switch_to.window(handle)
 
 				if self.driver.current_url in GHOST_TAB_URLS:
-					logger.info("Found ghost tab with handle %s and URL %s, not closing.", handle, self.driver.current_url)
+					logger.debug("Found ghost tab with handle %s and URL %s, not closing.", handle, self.driver.current_url)
 					continue
 
 				tab_url = self.driver.current_url
 
 				try:
 					self.driver.close()
-					logger.info("Closed tab with handle %s and URL %s.", handle, tab_url)
+					# Routine bookkeeping, one line per tab. At info it drowned
+					# the task summary: 19 of the 33 records in a full run were
+					# these. The warning below stays at warning, a tab that will
+					# not close is a real problem.
+					logger.debug("Closed tab with handle %s and URL %s.", handle, tab_url)
 
 				except WebDriverException:
 					logger.warning("Could not close tab with handle %s and URL %s.", handle, tab_url)