I have object dock running with the option to 'Display open windows along with my icons' selected

95% of the time it works great but I keep having a random problem where I click on one of the open applications and it seems to put the focus on that application window but it doesn't bring it to the front. Then I click it again to try again and it minimizes the window I was trying to pop up (showing that it had already brough it into focus but not displayed it on the first click). If I click it a third time, it comes up normally. Then everything works normally again. There doesn't seem to be any rhyme or reason... Any ideas?

Thanks in advance