Well, I realize this is an old post but hopefully I can help with a solution. Although to some not being able to view or access the items in contentIE.5 is very annoying mine became a problem. For some reason I could not run successfully any spyware or antivirus programs because when it reached these files it would automatically shut them down. I watched closely to get the general idea where the system was failing and then scanned individual sections till I narrowed it down to the contentIE5 file. I tried everything-- scanning each piece individually, changing extensions, deleting registry etc.. to no avail--my comp would simply shut my system down. Finally I simply moved the entire file to my desk top with a click and drag. Now I can view the extensions, click on the links, and scan the file or even delete them if I choose. By moving it to the desktop it is no longer a system file which always pops up the warnings. Oh well in any case good luck and I hope this benefits someone.

Thank you so much!
i found this very usefull, cos when i manualy delete files and folders in Content.IE5 its size is still big (aprox.1gb, instalation of Win is 2 monts old)
i dont use IE but Outlook2003 is in charge and all the attachments from the mails was in OKL2B which is unreachable without that extension
Thank you once again!