FR-1.1.3 on solaris10 strange things

[Alexander Serkin]

Hi.
We have strange behaviour on sparc solaris 10 server with fr-1.1.3 
installed:
without any visible reason the radiusd process goes to almost 100% CPU 
usage for 3-5 minutes. Then it comes back to normal state again (less 
than 1% CPU).
Visually the 100% CPU load does not impact the system funcionality - 
there are no problems with authentication/accounting processing.
The server is not hard loaded - there are not more than 2-3 requests per 
second on it.

prstat output reports:

PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU PROCESS/NLWP
757 radius     93M   10M run     40    0   0:56:05  99% radiusd/18

and "prstat -vm" :

PID USERNAME USR SYS TRP TFL DFL LCK SLP LAT VCX ICX SCL SIG PROCESS/NLWP
757 radius   4.5 1.1 0.0 0.0 0.0  93 0.2 1.6  65 315 .24   0 radiusd/18

has anybody seen this? What can be the reason?

Previously it was run on Netra-1120 with solaris 9, the subject appeared 
after moving to netra-240 Sol10:
5.10 Generic sun4u sparc SUNW,Netra-240

-- 
Alexander