When resuming from hibernation state, no new applications launched actually open.
Clicking on IE appears to do nothing. Hitting Ctrl-Shift-Esc fails to launch Task Manager, although, oddly, multiple Task Manager notification icons appears in the taskbar (but no actual Task Manager windows open). Applications that display a splash screen appear to do so but then fail to actually launch their main window.
However, applications that are already open appear to function reasonably properly.
But even more mysteriously, about 1 to 2 hours after resuming, the system suddenly stablizes and all applications that had been attempted to be launched open (including all the multiple iterations of Task Manager).
Performance monitors (if opened before hibernation) don't indicate any applications with extraordinary CPU or RAM utilization.
Vista is updated to SP1 with all the latest drivers (per driveragent.com) and most recent BIOS.
My guess is that there's a stuck application somewhere. Any suggestions on how to find it and eliminate it?