We use Sparkversions 2.5.8 and 2.6.0. And the (about 35) computers run XP, Vista and 7. Java is now 6u26 but problems started already with version 6u25. Server is CentOS 5.4 with Openfire 3.6.4.
When some users select Shutdown on their XP computers the Shutdown process hangs and displays the “End now”.
On Vista and on 7 computers the same thing happens but it instead says “Waiting for Spark”, “This program is preventing Windows...”.
So this happens on all computers with all operating systems and it happens for different Java and different Spark versions. I cannot see anything otherwise on the problem computers that they have in common. Same with the users, they have nothing that’s in common between them. It’s all very random. Although once the problem occurs it stays put. Have had only one user that says the problem went away by itself so I don’t really trust that statement (guess he just used differentcomputers).
I have cleared the Java cache and tried to clear up some other temp stuff but it’s made no difference. Have increased the time that Windows waits for software to close, with registry key HungAppTimeout set to 12sec.
Of these thirty five computers I’d say that half have the problem and half don’t.
Does anyone recognize this? Does anyone have a suggestion as to what I might try next?