It seems like file sharing between Mac OS 9 and Mac OS X has been crippled by the latest OS X security patch. According to MacNN, one of their readers reports that when a Mac OS 9 user tries to copy a file to an open Mac OS X file share, the fileshare "disconnects and the Finder reports that the share unexpectedly closed down."

The MacNN reader in question supports numerous clients across London and has clients that require Mac OS 9 to run older applications such as Quark 4 and other DTP applications. Other users have reported encountering similar issues. Another MacNN reader, though, has come up with the following workaround:

From within the Chooser:
Be sure to hold down the OPTION key while double-clicking the fileshare. This should force TCP/IP access rather than Appletalk access. That ought to fix your trouble. If not, then select the TCP/IP button and access the server that way instead of via Appletalk.

What about you guys? Anybody out there using Mac OS 9 experiencing this? Leave a comment and let us know.