Not if that is a,"constant" load temp.I little high maybe but nothing
to write home about as AMD CPUs are guaranteed to around 90 Deg C.
I can recommend a cheap/better HSF unit if you want better
cooling,
http://www.cclcomputers.biz/acatalog/coolersA370.htm
Cheap,good and comes with it's own,"Arctic Silver" type thermal
compound.Bargain of the year IMHO for AMD CPUs.
Note:Lapping/polishing the bottom of the HS can give a few degrees
lower temps and thermal paste should be applied(Small amount to the
top of the Raised Athlon core).
My O/C XP1800 usually sits around 41 Deg C idle at this time of year
and maxes around 50 Deg C under constant heavy gaming loads.
HTH
PS
Ambient room temperature affects CPU temps as does untidy wiring in
the case/Airflow restrictions and dust and crud on the Fans.
Around April in the UK I have a,"Spring Clean" and clean my HSF setup
and my back case fan etc.