panic: kmem_malloc(4096): kmem_map too small: 41299968 total allocated

 I was trying to get to sleep in bed at the time, and I heard the computers
BIOS beep(s). This is a 5.2-R box that had, as you can see, been up for 45
days. I had a search on google and it came up with this kind of panic from
mdconfig, but I wasn't touching it and I didn't have any md devices going
(I have never used them before either).

--------
 panic: kmem_malloc(4096): kmem_map too small: 41299968 total allocated

syncing disks, buffers remaining... 1134 1134 1134 1133 1133 1133 1133 1133
1133 1133 1133 1133 1133 1133 1133 1133 1133 1133 1133 1133 1133 1133 1133
giving up on 812 buffers
Uptime: 45d13h45m51s
Dumping 95 MB
 16 32 48 64 80
-----------

Unfortuantly it wasn't a debug kernel, not that I really know how to use
them either, but from 'bt' (for what it's worth) this is what is shown

------
(kgdb) bt
#0  0xc04dd1fb in doadump ()
#1  0xc04dd87f in boot ()
#2  0xc04ddc18 in panic ()
#3  0xc05f39a0 in kmem_malloc ()
#4  0xc0605687 in page_alloc ()
#5  0xc06052f3 in slab_zalloc ()
#6  0xc0606646 in uma_zone_slab ()
#7  0xc060689f in uma_zalloc_bucket ()
#8  0xc06064c8 in uma_zalloc_arg ()
#9  0xc04d13ac in malloc ()
#10 0xc04b9e35 in fdcopy ()
#11 0xc04c5a35 in fork1 ()
#12 0xc04c504b in fork ()
#13 0xc063a0c0 in syscall ()
#14 0xc062adfd in Xint0x80_syscall ()
---Can't read userspace from dump, or kernel process---

(kgdb)
--------

If it helps I have quite alot running on this box. Apache 1.3.x, MySQL 4.x,
dhcpd, bind 9, pure-ftp, nfs/nis server, samba, natd/ipfw and courier imap,
ssh, noip .. I think that's it.. but it's still quite alot. Don't worry
it's just for my little home network though.

Thanks in advance
Markie