cache consistency

Hi:

I wanted to ask some questions about caching in AFS.
I've used a Windows clients (1.3.66) with a RH8 Linux (1.2.11) server to
test "write" operations performed by MS Word clients. The connection betwwen
clients and servers is a very low bandwidth connection (64Kbps).
Using this applications in the clients, I've found that "write" operations
are "synchronous" on the server, and each time I save the document, the
applications hangs waiting the updates to be propagated to servers. That
makes the usage very annoying each time I perform a "save" operation because
the AFS protocol seems to be very inefficient (in KB/s transferred in saving
the document) in these updates, because with a 250KB document the save
operation lasts up to 2 minutes.

The questions are:
1) I wanted to ask if I wanted to ask if the "consistency" model for writes
is to update synchronously servers each time a "write" operation is
performed.
I've not used Linux clients, so I wanted to ask if this is the same for
them.

2) In case of being "true" the answer for the first question I wanted to ask
if there is any configuration settings for the cache or anything to optimize
the performance of the protocol for my particular needs. These are mostly
creation, edition and update of small documents (most of them less than
200Kb, and the rest not more than 500 KB).

Thanks in advance,
Juan Carlos