I run LimeWire with task maniger open all the time so I can monitor memory and cpu usage when testing. I have noticed that when LW is minimized to tray it uses 20% to 30% less memory. after a long period of time it Will creep back up. If you maximize it and minimize it again it will go back down. 512mb on a XP machine is a little weak in the memory department depending on how many applications you have running in the background IE windows XP 256 minimum LW depending on version 60mb to 100mb Norton 50mb etc. So the performance increase you are seeing is probably due to the increase in available memory when LW is minimized. Although I also have not seen this problem associated with just the search tab

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A little common sense goes a long way

Later Grandpa