Dir size error

[rickh]

A ftp server supports dir size(all file sizes under current dir) display, and flashFXP can show the correct dir size when browsing it, I found there is a dir size like 2,119,691,432, then upload a file into this dir, size may be 27 or 30 M bytes, then the dir size becomes ZERO after uploading it, but it displays OK under MS-DOS box.

It seems that flshfxp can't recongize the dir size if the dir size is over 2.x G bytes(more or less).