OS Name	Microsoft Windows 7 Ultimate
Version	6.1.7600 Build 7600
OS Manufacturer	Microsoft Corporation
System Type	x64-based PC
Processor	AMD Phenom(tm) 9850 Quad-Core Processor, 2500 Mhz, 4 Core(s), 4 Logical Processor(s)
BIOS Version/Date	Phoenix Technologies, LTD 6.00 PG, 2009-04-22
SMBIOS Version	2.5
Windows Directory	C:\Windows
System Directory	C:\Windows\system32
Boot Device	\Device\HarddiskVolume1
Locale	United States
Hardware Abstraction Layer	Version = "6.1.7600.16385"
Installed Physical Memory (RAM)	4.00 GB
Total Physical Memory	4.00 GB
Available Physical Memory	1.74 GB

Claws Mail
version 3.7.4cvs1
System Information
GTK+ 2.16.0 / GLib 2.20.0
Locale: en_US (charset: ISO-8859-1)
Operating System: Win32

When using _any_ GnuPG functions (signing, encrypting, etc.) the claws-mail
client enters a "Not Responding" state in the Windows Task Manager.

Forcibly closing the application causes /prompts /allows /unhides the
pinentry.exe window requesting the key passphrase.

Until claws-mail.exe is force closed, pinentry.exe does not appear in the Task
Manager list.

Running claws-mail.exe as a standard user, administrative user or with the
Windows 7 "Run as Administrator" option does not change this behavior.  Nor does any combination or setting in the "Compatibility" option dialog.

Entering the passphrase and re-starting claws-mail resolves the problem
temporarily, but after a seemingly random period of time (sometimes a few
hours, sometimes the next day), the behavior repeats and the client has to be
force-closed in order to enter the passphrase.

Changing the Passphrase options in Options->Preferences->Plugins->GPG does not
appear to make any difference for either selecting or clearing the "Store
passphrase ..." or "Grab input ..." option, nor for changing the expire time
from 0 to any length up to 500.

This also occurs on _different_ GnuPG functions.  E.g. if the program is
force-closed to sign a message, and then I attempt to sign+encrypt or encrypt a
message with the same key, I have to force-close again to enter the passphrase.