Strange Solaris 8 behavior and warnings in messages log

Hello,
Solaris 8 4/01 has strange behavior on Ultra 10. After an aleator period after log in, without running an application, window controls dissapear and the machine hangs up.
here are a few lines from messages log:
Aug 20 11:53:54 paris su: [ID 105066 kern.notice] NOTICE: su1: silo overflow
Aug 20 11:53:54 paris
Aug 20 11:53:54 paris su: [ID 643653 kern.notice] NOTICE: su1: ring buffer overflow
Aug 20 11:53:54 paris
Aug 20 11:55:55 paris su: [ID 643653 kern.notice] NOTICE: su1: ring buffer overflow
Aug 20 17:27:32 paris unix: [ID 839527 kern.notice] sched:
Aug 20 17:27:33 paris unix: [ID 294280 kern.notice] software trap 0x7f
Aug 20 17:27:34 paris unix: [ID 101969 kern.notice] pid=0, pc=0xf0050e14, sp=0x2a10001b2e1, tstate=0x8800001401, context=0x0
Aug 20 17:27:36 paris unix: [ID 743441 kern.notice] g1-g7: 10037c7c, 2, 1, 7, 0, 0, 2a10001fd40
Aug 20 17:27:37 paris unix: [ID 100000 kern.notice]
Aug 20 17:27:38 paris genunix: [ID 723222 kern.notice] 000000001040c110 unix:sync_handler+150 (1041a970, 10400000, 0, 0, 0, 0)
Aug 20 17:27:40 paris genunix: [ID 179002 kern.notice] %l0-3: 0000000000001602 0000000000000016 000000000000000e 0000000010009e90
Aug 20 17:27:40 paris %l4-7: 0000000000000000 0000000000000000 000000000000000c 000000001040c140
Aug 20 17:27:45 paris genunix: [ID 723222 kern.notice] 000000001040c1e0 unix:prom_rtt+0 (10000000, 16, f0000000, 1041b130, 3000005f548, 0)
Aug 20 17:27:48 paris genunix: [ID 179002 kern.notice] %l0-3: 0000000000000002 0000000000001400 0000008800001401 0000000010026e4c
Aug 20 17:27:48 paris %l4-7: 00000000f0050dc0 00000000f00676a8 000000000000000c 000000001040c290
Aug 20 17:27:52 paris genunix: [ID 723222 kern.notice] 000000001040c330 unix:client_handler+2c (f0067138, 2a10001bc48, 20, 10428288, 1, 1041a970)
Aug 20 17:27:55 paris genunix: [ID 179002 kern.notice] %l0-3: 000000001041a788 0000000000000000 000000001040e400 0000000000000001
Aug 20 17:27:55 paris %l4-7: 0000000000000016 000000000000000e 0000000000000016 000000000023f0e0
Aug 20 17:28:00 paris genunix: [ID 723222 kern.notice] 000002a10001bb90 unix:prom_enter_mon+28 (0, c, b, 300001b7000, 0, 1013c6b4)
Aug 20 17:28:02 paris genunix: [ID 179002 kern.notice] %l0-3: 0000000010026ad4 0000000000000016 0000000000000009 0000000010009c78
Aug 20 17:28:02 paris %l4-7: 000000001041b130 0000000000000016 0000000000000001 000002a10007d7f0
Aug 20 17:28:07 paris genunix: [ID 723222 kern.notice] 000002a10001bc60 unix:debug_enter+d0 (0, 30000fdf910, 0, 10, 0, 3000006a098)
Aug 20 17:28:09 paris genunix: [ID 179002 kern.notice] %l0-3: 000003000002da00 0000030000f70000 0000000000000000 00000300016943f0
Aug 20 17:28:09 paris %l4-7: 0000000000000000 00000300016943e0 00000300007a1f28 0000000000000000
Aug 20 17:28:13 paris genunix: [ID 723222 kern.notice] 000002a10001bd30 su:async_rxint+218 (30000fdf910, 3000107a088, 1000, ff, 0, 2000)
Aug 20 17:28:16 paris genunix: [ID 179002 kern.notice] %l0-3: 000000001013c6b4 000003000107a089 000003000105a086 0000000000000001
Aug 20 17:28:16 paris %l4-7: 0000030000fdf910 00000000000000f6 000003000105a000 0000000000006000
Aug 20 17:28:21 paris genunix: [ID 723222 kern.notice] 000002a10001bde0 su:asyintr+134 (6, 30000fdf910, 6, 10441de0, 10072068, 300001b7000)
Aug 20 17:28:24 paris genunix: [ID 179002 kern.notice] %l0-3: 0000000000000000 00000000001298dd 0000000000000000 000003000006a088
Aug 20 17:28:24 paris %l4-7: 00000300000578c8 000003000078fea8 0000000000000000 000003000078fed0
Aug 20 17:28:28 paris genunix: [ID 723222 kern.notice] 000002a10001be90 pcipsy:pci_intr_wrapper+64 (1047e2d8, 7e9, 1, 30000074148, 30000063208, 300001303c8)
Aug 20 17:28:32 paris genunix: [ID 179002 kern.notice] %l0-3: 000000001026fca4 0000000000000000 0000000000000000 0000030000073c28
Aug 20 17:28:32 paris %l4-7: 000000001158ff20 0000000000000000 0000000000000000 0000000000000000
Aug 20 17:28:36 paris genunix: [ID 723222 kern.notice] 000002a10001bf50 unix:current_thread+44 (2a10001fd40, 1041b130, 300011de010, 10423840, 16, 0)
Aug 20 17:28:39 paris genunix: [ID 179002 kern.notice] %l0-3: 0000000010007450 000002a10001f151 000000000000000c 000002a10001bf50
Aug 20 17:28:39 paris %l4-7: 0000000000000000 0000000000000000 0000000000000000 000002a10001fa00
Aug 20 17:28:44 paris genunix: [ID 723222 kern.notice] 000002a10001faa0 unix:idle+54 (1040f850, 0, 0, 1041b130, 3000005f548, 0)
Aug 20 17:28:46 paris genunix: [ID 179002 kern.notice] %l0-3: 00000000100416c4 0000000000000000 0000000000000000 000002a1000b7d40
Aug 20 17:28:46 paris %l4-7: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Aug 20 17:28:51 paris unix: [ID 100000 kern.notice]
Aug 20 17:28:51 paris genunix: [ID 672855 kern.notice] syncing file systems...
Aug 20 17:29:04 paris genunix: [ID 433738 kern.notice] [2]
Aug 20 17:29:04 paris genunix: [ID 733762 kern.notice] 12
Aug 20 17:30:47 paris genunix: [ID 433738 kern.notice] [2]
Aug 20 17:37:27 paris last message repeated 9 times
Aug 20 17:37:29 paris genunix: [ID 616637 kern.notice] cannot sync -- giving up
Aug 20 17:37:30 paris genunix: [ID 353387 kern.notice] dumping to /dev/dsk/c0t0d0s1, offset 214827008
Aug 20 17:37:38 paris genunix: [ID 409368 kern.notice] 100% done: 10582 pages dumped, compression ratio 3.80,
Aug 20 17:37:38 paris genunix: [ID 851671 kern.notice] dump succeeded
Any ideea what is wrong with my machine ?
Thank you,
Razvan

Hi Chandra,
unfortunately I can't stop the whole database just because of this "little" problem. And don't even know if it really helps. Now I'm installing the same SW on VMWare server. Hope, that it will help me reproduce this problem and then I can try this patch.
Thank you, however, for your suggestion.
Robert

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