mouse only right clicks

[lordfarrel]

Every now and again my wifes desktop environment suffers from a mouse problem. For a period of time the mouse only right clicks. When i reboot or swich user the problem disapears. I have tried looking in the system preferences but these seem to be perfect. Please help or redirect me. I have also tried googling with no luck. I have a 17" intel imac running the most updated os x 10.4.6. Thanks in advance

 

[billbaloney]

Have you tried a different mouse?

 

[lordfarrel]

I havnt tried a new mouse, the problem is intermittint on my wifes desktop only, the mouse may be faulty and maybe just a coinsidence that it only playes up on the wifes desktop but if anyone has an idea for a software solution id love to hear it. the main reason that leads me to believe that its software related is if i reboot or switch user back and forth the problem goes