Strange log warnings

[Andrea Lusuardi - UoVoBW]

Hi everyone,
first post on tor talk, hope this is also the right place where to get
help.
I've been running a server for almost 3 days now and everything works
fine, except fot theese log messages:

Aug 02 11:50:50.255 [warn] rend_mid_introduce(): No intro circ found for
INTRODUCE1 cell ([scrub bed]) from circuit 40951; responding with nack 

Aug 02 14:52:02.527 [warn] circuit_receive_relay_cell(): Didn't
recognize cell, but circ stops h ere! Closing circ. 

Aug 02 14:52:02.553 [warn] command_process_relay_cell():
circuit_receive_relay_cell (forward) fa iled. Closing.

The server is open, but since the machine is offering many other
services i can't open ports, so i had to set 

ExitPolicy reject *:*

in torrc.

Whgat are the messages?
should i worry?

TIA.
Bye

-- 
        Andrea Lusuardi aka UoVoBW 
       Registered Linux User #364578
-------------------------------------------------
Swing a little more, little more o'er the merry'o
Swing a little more, on the Devil's Dance Floor