I have read on Sofpedia's website that installing the latest Apple updates such as Security update and QuickTime update can cause your computer to 'lock up' upon startup. It says a quick problem to solve this is to go into safe mode and remove all startup items from library>startup items. but there are some things in there that i don't have a clue what they are and if i should delete them. they are: OpenBase, RadmindClient, Veoh and PhoneValet. Should I delete these or not or will the whole update be alright???