I had to force-quit PowerMail today as it hung while collecting mail. Some messages from the Console Log:
Apr 16 09:20:05 Thor kernel[0]: process PowerMail[218] caught causing excessive wakeups. Observed wakeups rate (per sec): 218; Maximum permitted wakeups rate (per sec): 150; Observation period: 300 seconds; Task lifetime number of wakeups: 1118572 Apr 16 09:20:05 Thor.local ReportCrash[30372]: Invoking spindump for pid=218 wakeups_rate=218 duration=207 because of excessive wakeups Apr 16 09:20:09 Thor.local spindump[30373]: Saved wakeups_resource.spin report for PowerMail version PowerMail version 6.2.1 build 4668 (6.2.1) to /Library/Logs/DiagnosticReports/PowerMail_2014-04-16-092009_Thor.wakeups_resource.spin Apr 16 09:21:59 Thor com.apple.launchd.peruser.501[197] ([0x0-0x8008].com.ctmdev.PowerMail[218]): Exited: Terminated: 15 Apr 16 09:22:09 Thor.local spindump[30522]: Saved hang report for PowerMail version PowerMail version 6.2.1 build 4668 (6.2.1) to /Library/Logs/DiagnosticReports/PowerMail_2014-04-16-092209_Thor.hang Apr 16 09:22:36 Thor.local PowerMail[30530]: InitOpenTransportInContext is unimplemented and will be removed soon. Please stop using it. I can send the hang report if required. -- Geoff using PowerMail 6.2.1 build 4668 on Mavericks 10.9.2

