[Zope] cannot upload files/create new objects

[Adam Garratt]

relative newbie problem:

all of the sudden today, after uploading hundreds and hundreds of
small/med/large documents onto a website, my zope won't let me create
any new objects or upload any new documents.

i've tried all first-tier solutions, including re-installing zope,
restarting computer & zope, making sure i have disk space, etc.  but
still, when i try something as simple as creating a new folder, my
browser sits and "works" and "works" and never times out.  help?

adam