My original question was
Hi gurus,
I have a Solaris7 running on sparc10. I'm not really sure about the
/var/crash/hostname. I have the following files in that directory.
drwx------   2 root          512 Jan 12 16:22 .
drwxrwxrwx   3 root          512 Oct 13 08:24 ..
-rw-r--r--   1 root            2 Jan 12 16:23 bounds
-rw-r--r--   1 root       371558 Nov 19 06:57 unix.0
-rw-r--r--   1 root       366276 Dec  4 07:41 unix.1
-rw-r--r--   1 root       360155 Jan 12 16:22 unix.2
-rw-r--r--   1 root     33411072 Nov 19 06:57 vmcore.0
-rw-r--r--   1 root     33345536 Dec  4 07:42 vmcore.1
-rw-r--r--   1 root     32473088 Jan 12 16:23 vmcore.
as you can see it's taking quite a bit of disk space. So if they are there
for no good reason, i wanna get rid of them.
Any ideas??
Thanks
Prabhat
Thanks to all the respones. 
These files were created when the system crashed on the indicated dates. These files are used to investigate analyze the nature and cause of the crash. Once the system is stable and running you dont need them anymore, so you can remove it by doing
# cd /var/crash/hostname
# rm *
if you dont want them to be created you can do so by editing (commenting out the last few lines) from /etc/init.d/sysetup 
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