All network activities halt.?

Waht can I do.
Im only running mysql, and sshd in this machine.

swap is about 1G.
Thanks All in advance.

Baltazar.

I attach some info about my machine.

74 mbufs in use:
        39 mbufs allocated to data
        35 mbufs allocated to packet headers
66/76 mapped pages in use
184 Kbytes allocated to network (83% in use)
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines


NetBSD 1.5Y (Dual Alpha 750Mhz) #2: Thu Oct 11 20:21:10 ART 2001
    root@jupiter:/usr/local/src/src/sys/arch/alpha/compile/JUPITER
AlphaPC 264DP 751 MHz, s/n
8192 byte page size, 2 processors.
total memory = 512 MB
(2808 KB reserved for PROM, 509 MB used by NetBSD)
avail memory = 471 MB
using 3272 buffers containing 26176 KB of memory
mainbus0 (root)
cpu0 at mainbus0: ID 0 (primary), UNKNOWN CPU TYPE (0:0)
cpu0: Architecture extensions: 307<PAT,MVI,CIX,FIX,BWX>
cpu1 at mainbus0: ID 1, UNKNOWN CPU TYPE (0:0)
cpu1: Architecture extensions: 307<PAT,MVI,CIX,FIX,BWX>
tsc0 at mainbus0: 21272 Core Logic Chipset, Cchip rev 0
tsc0: 4 Dchips, 1 memory bus of 32 bytes
tsc0: arrays present: 512MB (split), 0MB, 0MB, 0MB, Dchip 0 rev 1
tsp0 at tsc0
pci0 at tsp0 bus 0
pci0: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
sio0 at pci0 dev 5 function 0: Contaq Microsystems 82C693 PCI-ISA Bridge
(rev. 0x00)
pciide0 at pci0 dev 5 function 1: Cypress 82C693 IDE Controller (rev.
0x00)
pciide0: bus-master DMA support present
pciide0: primary channel wired to compatibility mode
atapibus0 at pciide0 channel 0: 2 targets
cd0 at atapibus0 drive 0: <TOSHIBA CD-ROM XM-6702B, , 1005> type 5 cdrom
removable
cd0: 32-bit data port
cd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
pciide0: primary channel interrupting at isa irq 14
cd0(pciide0:0:0): using PIO mode 4, DMA mode 2 (using DMA data
transfers)
pciide1 at pci0 dev 5 function 2: Cypress 82C693 IDE Controller (rev.
0x00)
pciide1: hardware does not support DMA
pciide1: primary channel wired to compatibility mode
pciide1: disabling primary channel (no drives)
Contaq Microsystems 82C693 PCI-ISA Bridge (USB serial bus, interface
0x10) at pci0 dev 5 function 3 not configured
ahc0 at pci0 dev 6 function 0
ahc0: interrupting at dec 6600 irq 19
ahc0: aic7890/91 Wide Channel A, SCSI Id=7, 255 SCBs
scsibus0 at ahc0: 16 targets, 8 luns per target
vga0 at pci0 dev 7 function 0: Texas Instruments TVP4020 Permedia 2
(rev. 0x01)
wsdisplay0 at vga0: console (80x25, vt100 emulation)
isa0 at sio0
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo
com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, working fifo
pckbc0 at isa0 port 0x60-0x64
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pcppi0 at isa0 port 0x61
fdc0 at isa0 port 0x3f0-0x3f7 irq 6 drq 2
fd0 at fdc0 drive 0: 1.44MB, 80 cyl, 2 head, 18 sec
mcclock0 at isa0 port 0x70-0x71: mc146818 or compatible
tsp1 at tsc0
pci1 at tsp1 bus 0
pci1: i/o space, memory space enabled, rd/line, rd/mult, wr/inv ok
de0 at pci1 dev 8 function 0
de0: interrupting at dec 6600 irq 43
de0: DEC DE500-BA 21143 [10-100Mb/s] pass 3.0
de0: address 08:00:2b:c4:6d:25
de0: enabling 100baseTX port
scsibus0: waiting 2 seconds for devices to settle...
sd0 at scsibus0 target 0 lun 0: <IBM, DNES-309170W, SAH0> SCSI3 0/direct
fixed
sd0: 8748 MB, 11474 cyl, 5 head, 312 sec, 512 bytes/sect x 17916240
sectors
sd0: sync (25.0ns offset 30), 16-bit (80.000MB/s) transfers, tagged
queueing
IPsec: Initialized Security Association Processing.
root on sd0a dumps on sd0b
root file system type: ffs
de0: enabling 100baseTX port

kern.maxvnodes = 10766
kern.maxproc = 532
kern.maxfiles = 1772
kern.argmax = 262144
kern.securelevel = 1
kern.hostname = jupiter
kern.hostid = 0
kern.clockrate: tick = 976, tickadj = 40, hz = 1024, profhz = 1024,
stathz = 1024
kern.posix1version = 199009
kern.ngroups = 16
kern.job_control = 1
kern.saved_ids = 0
kern.boottime = Fri Oct 12 12:00:56 2001
kern.domainname =
kern.maxpartitions = 8
kern.rawpartition = 2
kern.autonicetime = 600
kern.autoniceval = 4
kern.rtc_offset = 0
kern.root_device = sd0
kern.msgbufsize = 8160
kern.fsync = 1
kern.sysvmsg = 1
kern.sysvsem = 1
kern.sysvshm = 1
kern.synchronized_io = 1
kern.iov_max = 1024
kern.mbuf.msize = 256
kern.mbuf.mclbytes = 2048
kern.mbuf.nmbclusters = 65535
kern.mbuf.mblowat = 16
kern.mbuf.mcllowat = 8
kern.mapped_files = 1
kern.memlock = 1
kern.memlock_range = 1
kern.memory_protection = 1
kern.login_name_max = 17
kern.defcorename = %n.core
kern.logsigexit = 0
kern.fscale = 2048
kern.ccpu = 1948
kern.cp_time: user = 320225, nice = 1268, sys = 213600, intr = 31610,
idle = 551376408
kern.consdev = ttyE0
kern.maxptys = 256
kern.maxphys = 65536
vm.loadavg: 0.40 0.26 0.16
vm.nkmempages = 16296
vm.anonmin = 10
vm.vtextmin = 5
vm.vnodemin = 10
vm.maxslp = 20
vm.uspace = 16384