hgfs problem with ubuntu 11.04

With Ubuntu 11.04 64 bit guest on a osx 10.6.7 host, when a file in a shared directory is edited or renamed on the host, the guest view of that file breaks.  A directory listing from the guest for that file simply contains   "????????  ????    ???".  And of course the file is not readable from the guest.  On the host there are not issues.   Additionally, creation of a new file from the host in a shard directory functions correctly.

This is using the latest vmtools package VMwareTools-8.4.7-416484.tar.gz

I also tried the same actions on ubuntu 10.10 with the same vmtools package and everything functions as expected.