ubuntu host, winXP guset, can't access link files in shared folder.

I installed XP guest on ubuntu, adding a shared folder and  mapping it as a network driver in XP.

Then it turned out that I can't access any soft link files of that folder in XP, it says like 'access deny'.

And as I can see, all these link files show size of 1KB in XP no matter what their real sizes are.

Any advice will be appreciated.