How much RAM is installed? Sounds exactly like too little RAM to support all the open apps. I always try to bring my Macs up close to their maximum RAM capacity. You can also use Activity Monitor to see how much CPU capacity is being by various applications in real time. Some applications become progressively bigger hogs the longer they are left open or the machine has been running. Quitting and/or rebooting can tamp that down. So can emptying caches and libraries - though be careful not to trash data you need. HTH.. Original Message: ----------------- From: O'Brien obgraph at hiwaay.net Date: Wed, 12 Dec 2007 23:04:53 -0600 To: g4 at listserver.themacintoshguy.com Subject: Re: [G4] [Help] PowerMac G4 Quicksilver 800MHz on PowerMac G4 AGPGraphics, it works? On Thu, 13 Dec 2007 01:40:50 -0300 (ART), Francisco wrote: > I'm using OS X Tiger, > What is not being good is: slow when playing youtube > videos, or when i'm using MSN Messenger with 3 or 4 > window of conversation, itunes goes slow too, slow to > run small java applications (i'm programmer), slow to > run thunderbird mail > client, slow to view some webpages, like ebay.com I'm not sure, but it seems to me that iTunes and Thunderbird should be working OK on a 500mHz machine. YouTube could be slow, but the speed could also depend on the speed of your internet connection. I'm not being much help. . . . . . . . . . . . . . . . . . . . . . . O'Brien -------------------------------------------------------------------- mail2web.com What can On Demand Business Solutions do for you? http://link.mail2web.com/Business/SharePoint