OSPF DEAD TIMER EXPIRES

hi,
The dead timers expires b/w SW1 and R3, mtu are same. any suggestions???

            TRUNK TRUNK
vlan 13
SW1----------------------SW3-------------------SW2------------------R3
       15.194
15.193

Rack19R3#
*Mar 1 01:04:05.527: %OSPF-5-ADJCHG: Process 2, Nbr 19.19.7.7 on
FastEthernet0/1 from FULL to DOWN, Neighbor Down: Dead timer expired
*Mar 1 01:04:06.571: OSPF: Send hello to 224.0.0.5 area 0 on
FastEthernet0/1 from 19.19.15.193
*Mar 1 01:04:06.615: OSPF: Rcv hello from 19.19.7.7 area 0 from
FastEthernet0/1 19.19.15.194
*Mar 1 01:04:06.623: OSPF: Send immediate hello to nbr 19.19.7.7, src
address 19.19.15.194, on FastEthernet0/1
*Mar 1 01:04:06.627: OSPF: Send hello to 19.19.15.194 area 0 on
FastEthernet0/1 from 19.19.15.193
*Mar 1 01:04:06.631: OSPF: End of hello processing
*Mar 1 01:04:06.823: %OSPF-5-ADJCHG: Process 2, Nbr 19.19.7.7 on
FastEthernet0/1 from LOADING to FULL, Loading Done

-- 
Regards,
Masroor Ali
P Please don't print this e-mail unless you really need to.
Blogs and organic groups at http://www.ccie.net