DNS cache poisoning and pharming

["David" <david () clicksee net>]

http://hostsearch.com/news/logiguard_news_3177.asp
 
This article makes a claim that DNS poisoning and pharming are really
dangerous in that anyone can be redirected from trying to go to their
online bank to a fake bank site where there login is collected. Is this
really such a threat or is it just Logiguard advertising themselves?
 
Thanks,
 
Dave