Calls do not hangup in a queue

I´m using Asterisk 1.2.13 with Realtime sip users and queues. I couldn´t figure out what causes some calls to not hangup in fila2. Is there any issues in Asterisk regarding this ?

In fila1 the problem does not occur.

sipcor*CLI> show queues

fila1 has 0 calls (max unlimited) in ‘rrmemory’ strategy (42s holdtime), W:0, C:111, A:96, SL:0.0% within 0s
Members:
SIP/2017 with penalty 3 (Not in use) has taken no calls yet
SIP/2170 with penalty 2 (Unavailable) has taken 24 calls (last was 87515 secs ago)
SIP/2389 with penalty 3 (Unavailable) has taken no calls yet
SIP/2898 with penalty 2 (Not in use) has taken 87 calls (last was 1775 secs ago)
No Callers

fila2 has 33 calls (max unlimited) in ‘rrmemory’ strategy (0s holdtime), W:0, C:0, A:75, SL:0.0% within 0s
Members:
SIP/2041 with penalty 2 (Not in use) has taken no calls yet
SIP/2093 with penalty 2 (Unavailable) has taken no calls yet
SIP/2641 with penalty 2 (Not in use) has taken no calls yet
SIP/2884 with penalty 2 (Not in use) has taken no calls yet
Callers:
1. SIP/200.170.136.197-08d1ef70 (wait: 6981:20, prio: 0)
2. SIP/200.170.136.197-08b0edd8 (wait: 6979:34, prio: 0)
3. SIP/200.170.136.197-b79e7c70 (wait: 6973:04, prio: 0)
4. SIP/200.170.136.197-b770eb70 (wait: 6949:29, prio: 0)
5. SIP/200.170.136.197-b79b5258 (wait: 6947:56, prio: 0)
6. SIP/200.170.136.197-b792f6b8 (wait: 6920:05, prio: 0)
7. SIP/200.170.136.197-b79baa98 (wait: 6865:32, prio: 0)
8. SIP/200.170.136.197-08e697c8 (wait: 6795:59, prio: 0)
9. SIP/200.170.136.197-08bc4778 (wait: 6793:11, prio: 0)
10. SIP/200.170.136.197-08ac8bf0 (wait: 5859:29, prio: 0)
11. SIP/200.170.136.197-b79f7f08 (wait: 5855:03, prio: 0)
12. SIP/200.170.136.197-b77320b8 (wait: 5852:52, prio: 0)
13. SIP/200.170.136.197-08e38b90 (wait: 5850:55, prio: 0)
14. SIP/200.170.136.197-b794cda0 (wait: 5844:44, prio: 0)
15. SIP/200.170.136.197-08eb6b80 (wait: 5803:36, prio: 0)
16. SIP/200.170.136.197-b7964ec8 (wait: 5800:06, prio: 0)
17. SIP/200.170.136.197-b7769cc0 (wait: 5798:48, prio: 0)
18. SIP/200.170.136.197-b7797100 (wait: 5798:18, prio: 0)
19. SIP/200.170.136.197-b7779980 (wait: 5798:08, prio: 0)
20. SIP/200.170.136.197-b7972748 (wait: 5796:50, prio: 0)
21. SIP/200.170.136.197-b7762ad0 (wait: 5793:22, prio: 0)
22. SIP/200.170.136.197-b7709930 (wait: 5520:04, prio: 0)
23. SIP/200.170.136.197-b78bf638 (wait: 5455:26, prio: 0)
24. SIP/200.170.136.197-b77140b0 (wait: 4776:31, prio: 0)
25. SIP/200.170.136.197-b771ddd8 (wait: 4775:03, prio: 0)
26. SIP/200.170.136.197-b761c728 (wait: 4384:49, prio: 0)
27. SIP/200.170.136.197-b6e116e0 (wait: 4221:22, prio: 0)
28. SIP/200.170.136.197-b6ae45f0 (wait: 1455:48, prio: 0)
29. SIP/200.170.136.197-b76cdec8 (wait: 222:59, prio: 0)
30. SIP/200.170.136.197-08d87678 (wait: 182:55, prio: 0)
31. SIP/200.170.136.197-b6c891e8 (wait: 180:58, prio: 0)
32. SIP/200.170.136.197-08f32338 (wait: 175:25, prio: 0)
33. SIP/200.170.136.197-b7743e30 (wait: 40:16, prio: 0)