Issue Drweb is killing my Webtraffic

[Dirk]

My websites were just offline for several minutes. The reason was drweb getting new definitions. Is there a way to assign a lower priority and less web-bandwidth to this process? It is not acceptable, that my sites are offline because of this.

syslog:
Jul 20 20:03:12 liesenfeld drwebd.real: Loading /var/drweb/bases/drw70039.vdb - Ok, virus records: 14727
Jul 20 20:03:13 liesenfeld drwebd[24784]: Loading /var/drweb/bases/drw70038.vdb - Ok, virus records: 19485
Jul 20 20:03:13 liesenfeld drwebd.real: Loading /var/drweb/bases/drw70038.vdb - Ok, virus records: 19485
Jul 20 20:03:13 liesenfeld drwebd[24784]: Loading /var/drweb/bases/drw70037.vdb - Ok, virus records: 22898
Jul 20 20:03:13 liesenfeld drwebd.real: Loading /var/drweb/bases/drw70037.vdb - Ok, virus records: 22898
Jul 20 20:03:13 liesenfeld drwebd[24784]: Loading /var/drweb/bases/drw70036.vdb - Ok, virus records: 20551
Jul 20 20:03:13 liesenfeld drwebd.real: Loading /var/drweb/bases/drw70036.vdb - Ok, virus records: 20551
Jul 20 20:03:13 liesenfeld drwebd[24784]: Loading /var/drweb/bases/drw70035.vdb - Ok, virus records: 9661
Jul 20 20:03:13 liesenfeld drwebd.real: Loading /var/drweb/bases/drw70035.vdb - Ok, virus records: 9661
Jul 20 20:03:14 liesenfeld drwebd[24784]: Loading /var/drweb/bases/drw70034.vdb - Ok, virus records: 23632

(many more lines following...)

btw. I checked "top" all the time, and there was enough cpu-power left. It only affected the websites...