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Recently put a clean install of Windows 7 x64 on a laptop. Now all imaging-related apps seem to hang on close, approx. one time out of every 10 runs.

Problem details

I close an imaging app (Photoshop CS5 x64, Photoshop CS5 x32, or Irfanview 4.30). Approximately one out of ten times, the app window will close, but the process will remain running, visible in the Processes tab of the Task Manager.

These processes use minimal CPU ( < 1% ) and does not interfere with future instances of the application (Photoshop or Irfanview can be opened again while the hung process is present).

This does not happen with any other apps than those mentioned above.


For Irfanview, this will happen 100% of the time if the Save for Web plugin is used, and then the program is closed via the Esc key.

Update 2

Found a related topic here, although no solution was found.

Update 3

This behavior does not appear on Windows XP. Tested with clean installs of Windows 7 x64 SP1 Ultimate, Windows XP SP3 Pro and Windows XP 64-bit SP2.

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What are the hardware specs. for the laptop? – iglvzx Dec 18 '11 at 19:23
@iglvzx - Intel Core 2 Duo, 500GB HDD, 4GB RAM, Intel Mobile Series 4 graphics. – Unsigned Dec 18 '11 at 19:26
@Psycogeek - No connections from Photoshop between exit and the window disappearing. Photoshop sat all night ( > 8 hours) and had to be manually killed in the morning. – Unsigned Dec 18 '11 at 20:35
I think I saw that with another program, in 7, but I am still clinging to XP. I fired up the resource monitor to check for all I/O it might be doing. that is all i remember :-( --Interested. – Psycogeek Dec 18 '11 at 20:53
@Unsigned: What plugin is the "Save for Web Plugin"? I'm having trouble finding such a plugin to try this... – Mehrdad Dec 25 '11 at 21:10

It's likely just a bug.

Honestly, I think it's just a bug. The only "solution" would be provided by the developers.

File a bug report if you're in the mood (especially consider this if you can come up with instructions for reproducing the problem).

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A bug that appears in both Irfanview and both versions of Photoshop? That seems possible but unlikely. – Unsigned Dec 25 '11 at 18:06
@Unsigned: It's also appeared in other programs I've seen, and programs I've written. It's an easy bug to make, especially if your program is multithreaded or does anything in the background. There's nothing unusual about it. – Mehrdad Dec 25 '11 at 18:57
What exactly is the bug? Why doesn't it appear in other versions of Windows? – Unsigned Dec 25 '11 at 20:24
I've run traces, and from all I can tell, the applications seem to think they're back in a message loop. It doesn't seem to be a Windows problem per se, yet it is specific to a certain Windows edition. – Unsigned Dec 25 '11 at 20:49
@Unsigned: Yeah, the bug is quite often that it isn't exiting the message loop, but it's the reason that makes each bug different. Are there any DWM-related messages being sent? (Spy++ might be helpful, if you're not using it already.) Maybe it's related to one of those? I'll see if I can reproduce the problem and figure it out, though I doubt I can. – Mehrdad Dec 25 '11 at 20:56

Install the latest drivers, especially video and chipset, and make sure your apps are patched to their latest versions as well.

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Already done. Have even tried several different driver versions (all on discrete, clean installs). – Unsigned Dec 22 '11 at 21:14

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