unable to open http:// files

[bill cole]

G'Day
Running G5, 1.8 Ghz, Safari 2.0.3, Mail 2.0.2, 768 ramm, o/s 10.4.5.
When in mail, I used to be able to click any web page address with  
prefix " http:// " ie as at the bottom of  "mail " messages, such as   
wamug " Archives ". " guidelines" etc .
	Nothing happens now, unless I have Safari open in the background,  
when they will open. Any help to get back to  "click/open " would be  
much appreciated

 Thanks
Bill Cole