squid upgrade question

Hello all,

Question,  I just upgraded to squid.2.5.STABLE2 and configured squid 
with aufs (RedHat Linux system).
Before, I was running squid2.5.STABLE1 utilizing just ufs and would type 
cmd ps -ef to see
five squid nsca processes
five squid ldap processes
five squid perl processes
/usr/local/squid/sbin/squid
(squid)
(unlinkd)

Now with STABLE2 and aufs, there are many more squid processes, please 
see list.
Why are there more "(squid)" processes?
Is this normal?
Is it because I am using aufs?


root     31247     1  0 12:12 ?        00:00:00 /usr/local/squid/sbin/squid
squid    31250 31247  0 12:12 ?        00:00:00 (squid)
squid    31251 31250  0 12:12 ?        00:00:00 /usr/bin/perl 
/usr/local/squid2.
squid    31252 31250  0 12:12 ?        00:00:00 /usr/bin/perl 
/usr/local/squid2.
squid    31253 31252  0 12:12 ?        00:00:00 
/usr/local/squid/libexec/ncsa_au
squid    31254 31250  0 12:12 ?        00:00:00 /usr/bin/perl 
/usr/local/squid2.
squid    31255 31252  0 12:12 ?        00:00:00 
/usr/local/squid/libexec/squid_l
squid    31256 31250  0 12:12 ?        00:00:00 /usr/bin/perl 
/usr/local/squid2.
squid    31257 31254  0 12:12 ?        00:00:00 
/usr/local/squid/libexec/ncsa_au
squid    31258 31254  0 12:12 ?        00:00:00 
/usr/local/squid/libexec/squid_l
squid    31259 31251  0 12:12 ?        00:00:00 
/usr/local/squid/libexec/ncsa_au
squid    31260 31251  0 12:12 ?        00:00:00 
/usr/local/squid/libexec/squid_l
squid    31261 31256  0 12:12 ?        00:00:00 
/usr/local/squid/libexec/ncsa_au
squid    31262 31256  0 12:12 ?        00:00:00 
/usr/local/squid/libexec/squid_l
squid    31263 31250  0 12:12 ?        00:00:00 /usr/bin/perl 
/usr/local/squid2.
squid    31264 31250  0 12:12 ?        00:00:00 (unlinkd)
squid    31265 31263  0 12:12 ?        00:00:00 
/usr/local/squid/libexec/ncsa_au
squid    31266 31263  0 12:12 ?        00:00:00 
/usr/local/squid/libexec/squid_l
squid    31267 31250  0 12:12 ?        00:00:00 (squid)
squid    31268 31267  0 12:12 ?        00:00:00 (squid)
squid    31269 31267  0 12:12 ?        00:00:00 (squid)
squid    31270 31267  0 12:12 ?        00:00:00 (squid)
squid    31271 31267  0 12:12 ?        00:00:00 (squid)
squid    31272 31267  0 12:12 ?        00:00:00 (squid)
squid    31273 31267  0 12:12 ?        00:00:00 (squid)
squid    31274 31267  0 12:12 ?        00:00:00 (squid)
squid    31275 31267  0 12:12 ?        00:00:00 (squid)
squid    31276 31267  0 12:12 ?        00:00:00 (squid)
squid    31277 31267  0 12:12 ?        00:00:00 (squid)
squid    31278 31267  0 12:12 ?        00:00:00 (squid)
squid    31279 31267  0 12:12 ?        00:00:00 (squid)
squid    31280 31267  0 12:12 ?        00:00:00 (squid)
squid    31281 31267  0 12:12 ?        00:00:00 (squid)
squid    31282 31267  0 12:12 ?        00:00:00 (squid)
squid    31283 31267  0 12:12 ?        00:00:00 (squid)

Thanks !