diff --git a/src/calibre/constants.py b/src/calibre/constants.py
index 98554712a7..e109c082c8 100644
--- a/src/calibre/constants.py
+++ b/src/calibre/constants.py
@@ -2,7 +2,7 @@ __license__   = 'GPL v3'
 __copyright__ = '2008, Kovid Goyal kovid@kovidgoyal.net'
 __docformat__ = 'restructuredtext en'
 __appname__   = 'calibre'
-__version__   = '0.4.86'
+__version__   = '0.4.87'
 __author__    = "Kovid Goyal <kovid@kovidgoyal.net>"
 '''
 Various run time constants.
diff --git a/src/calibre/parallel.py b/src/calibre/parallel.py
index c8b8cd029f..6b19d7ba49 100644
--- a/src/calibre/parallel.py
+++ b/src/calibre/parallel.py
@@ -484,9 +484,9 @@ class Overseer(object):
                 self.terminate()
                 self.job.exception = ControlError('Worker sent invalid msg: %s'%repr(msg))
                 return
-        if not self.worker_status.is_alive() or time.time() - self.last_report > 180:
+        if not self.worker_status.is_alive() or time.time() - self.last_report > 380:
             self.terminate()
-            self.job.exception = ControlError('Worker process died unexpectedly with returncode: %s'%str(self.process.returncode))
+            self.job.exception = ControlError('Worker process died unexpectedly')
             return
 
 class JobKilled(Exception):