I had a copy of OpenACS on my hard drive - and then un-installed it. But there is still a folder that won't delete.
OpenACS cygwin var postgresql data base 17142
17142 seems to be read-only and won't reset so it can be removed.
are talking about removing a folder within Windows ?.... since you mention cygwin ..
If you are admin on the machine you should be able to take ownership of whatever file/folder, give yourself relevant permission and delete it.
Is this what you meant ?