random panics: vm_phys_free_pages: page 0xc161f2a0 has unexpected order 10

<DIV style="font-family:Arial, sans-serif; font-siz£;"><FONT size="2"><SPAN style="font-family: Arial,sç2×rif;">I am getting random panics with 7.0-CURRENT iƒb couple of examples of what has been triggering the—2xtracting ports tree via portsnap and compiling por2ãÄ><BR></SPAN></FONT><PRE>Unread portion of the kerneÖWage buffer:<BR>panic: vm_phys_free_pages: page 0xc23s& has unexpected order 10<BR>cpuid = 0<BR>KDB: enterc<BR>Uptime: 1h35m53s<BR>Physical memory: 1011 MB<BäGVing 167 MB: 152 136 120 104 88 72 56 40 24 8<BR><BR3oadump () at pcpu.h:195<BR>195     pcpu.h: No such –ÆRr directory.<BR>        in pcpu.h<BR>(kgdb) bt<BR>#Fdump () at pcpu.h:195<BR>#1  0xc074d98e in boot (hoFóÓ0) at /usr/src/sys/kern/kern_shutdown.c:409<BR>#2  †3dc4b in panic (fmt=Variable "fmt" is not available.BBR>    /usr/src/sys/kern/kern_shutdown.c:563<BR>#3 †369ace in vm_phys_free_pages (m=0xc22c72a0, order=0)%#â  at /usr/src/sys/vm/vm_phys.c:419<BR>#4  0xc096443–âm_page_free_toq (m=0xc22c72a0)<BR>    at /usr/src/s2÷fvm_page.c:1308<BR>#5  0xc0964526 in vm_page_free_zeò†0xc22c72a0)<BR>    at /usr/src/sys/vm/vm_page.c:511%#â  0xc09fe043 in pmap_remove_pages (pmap=0xc6c00344)%#â  at /usr/src/sys/i386/i386/pmap.c:1142<BR>#7  0xc0VCc in vmspace_exit (td=0xc75bc000) at /usr/src/sys/vmfÕöp.c:395<BR>#8  0xc072eaeb in exit1 (td=0xc75bc000, cÓBR>    at /usr/src/sys/kern/kern_exit.c:294<BR>#9  †3f8ad in sys_exit (td=Could not find the frame base ÷"ys_exit".) <BR>    at /usr/src/sys/kern/kern_exit.c“ƒÄ>#10 0xc0a025b3 in syscall (frame=0xe678bd38)<BR>  Busr/src/sys/i386/i386/trap.c:1008<BR>#11 0xc09e8850–ânt0x80_syscall ()<BR>    at /usr/src/sys/i386/i386/†6Wion.s:196<BR>#12 0x00000033 in ?? ()<BR>Previous frÖRner to this frame (corrupt stack?)<BR><BR>Any help ÷VÆbe greatly appreciated.<BR><BR>Regards<BR><BR>Brad<#ãÄNT size="2"><SPAN style="font-family: Arial,sans-se–c²</SPAN></FONT></PRE><FONT size="2"><SPAN style="fonÖfÖ–Ç“¢&–ÂÇ6ç2×6W&–c²#ãÂõ5ããÂôdôåCãÂôD•cà