Mount issue

Dear all,

I just installed a new CO system, which runs next to the existing one. i am having problems mounting networtk shares.
They are exactly the same as on the previous install, just added two lines in my FSTAB file.
But on the new install they won't come up after a reboot, but they do when issueing the command; "mount -a".
looking into the logs, i see an error messge saying, "could not find route to host"
Everything (internet search, my own feelings) point me in the direction of the network not being up in time.

Anyone know of a proper way to fix this?

i already tried several startup scripts, with delays of the mount, but none of them worked.