tcptrace gives quite a nice summary complementary to the detailed view that wireshark gives you.  Here's the -l output on this file:


wget_bazaar.lp.net-short.pcap: 3000 100% (0:00:35.485313)
3000 packets seen, 3000 TCP packets traced
elapsed wallclock time: 0:00:05.063794, 592 pkts/sec analyzed
trace file elapsed time: 0:00:35.485839
	first packet:  Fri Jun 18 07:44:03.868056 2010
	last packet:   Fri Jun 18 07:44:39.353895 2010
TCP connection info:
1 TCP connection traced:
TCP connection 1:
	host a:        192.168.2.16:57288
	host b:        crowberry.canonical.com:80
	complete conn: no	(SYNs: 2)  (FINs: 0)
	first packet:  Fri Jun 18 07:44:03.868056 2010
	last packet:   Fri Jun 18 07:44:39.353895 2010
	elapsed time:  0:00:35.485839
	total packets: 3000
	filename:      wget_bazaar.lp.net-short.pcap
   a->b:			      b->a:
     total packets:          1085           total packets:          1915      
     ack pkts sent:          1084           ack pkts sent:          1915      
     pure acks sent:         1083           pure acks sent:            1      
     sack pkts sent:          403           sack pkts sent:            0      
     dsack pkts sent:           3           dsack pkts sent:           0      
     max sack blks/ack:         2           max sack blks/ack:         0      
     unique bytes sent:       188           unique bytes sent:   2745919      
     actual data pkts:          1           actual data pkts:       1913      
     actual data bytes:       188           actual data bytes:   2750275      
     rexmt data pkts:           0           rexmt data pkts:           3      
     rexmt data bytes:          0           rexmt data bytes:       4356      
     zwnd probe pkts:           0           zwnd probe pkts:           0      
     zwnd probe bytes:          0           zwnd probe bytes:          0      
     outoforder pkts:           0           outoforder pkts:         390      
     pushed data pkts:          1           pushed data pkts:         20      
     SYN/FIN pkts sent:       1/0           SYN/FIN pkts sent:       1/0      
     req 1323 ws/ts:          Y/N           req 1323 ws/ts:          Y/N      
     adv wind scale:            2           adv wind scale:            7      
     req sack:                  Y           req sack:                  Y      
     sacks sent:              403           sacks sent:                0      
     urgent data pkts:          0 pkts      urgent data pkts:          0 pkts 
     urgent data bytes:         0 bytes     urgent data bytes:         0 bytes
     mss requested:          1460 bytes     mss requested:          1460 bytes
     max segm size:           188 bytes     max segm size:          1452 bytes
     min segm size:           188 bytes     min segm size:             8 bytes
     avg segm size:           187 bytes     avg segm size:          1437 bytes
     max win adv:          261340 bytes     max win adv:            6912 bytes
     min win adv:           16068 bytes     min win adv:            6912 bytes
     zero win adv:              0 times     zero win adv:              0 times
     avg win adv:          180585 bytes     avg win adv:            6912 bytes
     initial window:          188 bytes     initial window:         2904 bytes
     initial window:            1 pkts      initial window:            2 pkts 
     ttl stream length:        NA           ttl stream length:        NA      
     missed data:              NA           missed data:              NA      
     truncated data:            0 bytes     truncated data:            0 bytes
     truncated packets:         0 pkts      truncated packets:         0 pkts 
     data xmit time:        0.000 secs      data xmit time:       35.138 secs 
     idletime max:          410.2 ms        idletime max:          410.3 ms   
     throughput:                5 Bps       throughput:            77381 Bps  

Nothing stands out as particularly bad to me (I may be missing something) except there are a surprising number of out of order packets, but they are mostly causing SACK rather than retransmission.