[Samba] Strange problem with just 1 file..?

[Collen Blijenberg]

We are experiencing a strange problem with accessing a file, i tested it 
on samba 3.0.11 and 3.0.14a

when we access the file (ask property's,copy or just run it) windows 
explorer gets system load of aprox. 100% for about 50 sec, and then 
starts (or shows the prop) the program.
if i do the same, with another normal program on the same share and dir, 
the 50 sec. hick up isn't there.
if i copy the file locally the issue is gone!

the program is about 3,5 meg big, but i have a hunch that it's a so 
called compressed executable. (WilmarkWizard II Suite i guess)

samba log files don't show strange behavior (no panics or errors on 
level 2).
the server does it's work normally, we don't experience other probs with 
samba, it's just this one file.

someone got a clue ??

Cheers

Collen.