I have an Acer Aspire 1691WLMi on which there is a gigantic (1.2gb) old hibernation file sitting on C which I can't get rid of. I don't want to use the hibernation feature any more, but this file can't be deleted. The standard answer to this question is to go into Power Options and disable the Hibernate option and next time you start up, it deletes the file. The problem is, though, that Acer's ePowerManagement has supplanted the basic Windows control and there is no apparent means of disabling hibernation. Has anyone else run into this and come up with a solution?