Versions of Firefox before 1.5 tend to use more and more of your system's RAM as time goes on. Geeks call this problem a "memory leak." This particular memory leak is not the fault of Firefox - the Macromedia Flash plug-in is causing this problem!

To fix it, just follow these steps:

• In your location bar, type about:config and press Enter
• Right-click on the screen to bring up a menu, click on New then choose Integer
• A pop-up box will ask you for the "preference name". Type in browser.cache.memory.capacity and click OK
• Another pop-up box will appear - type in the number 60000
• Close Firefox and restart the program. No more memory leak!