Serious autosaving problems (data being lost)

I wasn't sure which was the appropriate forum section to post this, but I figure I'd start here since I noticed this probelm after upgrading to Mavericks.
I do most of my work for my law practice on my MacBook Air.  Except for open cases and files, most of my documents are archived on a 1TB drive installed in my Mac Pro.  That hard drive is shared on my office network.  The office network is simple: just a ATT U-Verse modem connected to an Airport Extreme and a couple of ethernet hubs.  My MacBook Air normally is connected over wifi.
Anyway, I rarely access the archived files, but when I do, I open them in Pages, and I may or may not make some changes.  Yesterday, I tried editing a couple of .pages documents.  Pages natually tried to autosave, but it told me that another application was using the file and the changes could not be saved.  It gave me the option to "save anyway," which I selected, but that failed and the error message that popped up insisted that I close the docuemnt.  This happened for both of the documents I was working on, however... on one document only the changes were lost, but on the other docuemnt something was corrupted and the document could not be opened after that.
Like I said, I'm running the latest version of Mavericks on both my MacBook Air and the Mac Pro.  The shared storage drive in the Mac Pro hasn't been formatted or anything like that since Snow Leopard.

Anyone?

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