unix boxes cant seem to copy medium or large shares from an xp pro used with smb.

smb:// \My Shared Folder\Linux\> get Star_Office_6.0_Final_for_Linux.Quartex.ShareReactor.rar
NT_STATUS_ACCESS_DENIED opening remote file \My Shared Folder\Linux\Star_Office_6.0_Final_for_Linux.Quartex.ShareReactor.rar

but small files...

smb: \My Shared Folder\Linux\> get smb.print.txt
getting file \My Shared Folder\Linux\smb.print.txt of size 0 as smb.print.txt (714.7 kb/s) (average 714.7 kb/s)

i assume this is a m$ thing and in that area im not too keen. Any one know the deal with this.
thanks

googeling hits some situations similar to mine occuring with win98 clients. The connsensus here is that it is intrinsic to win98. However i am running xp pro and i know others with same setup sucessfully download larger files from these clients. Any one else here of a situation like mine?
thanks again.