Hi guys, I've been working on trying to solve this issue, but I can't! I usually keep by Dell Vostro laptop running and I don't like to shut it down on daily basis. So what I do is that i just put it into standby mode to resume back quickly to continue my work on it. Since several months ago, I noticed that almost after a week (or 8 days) of XP SP3 uptime, XP fails to function properly, meaning that, if i try to open a program, it fails without even displaying a message, it just produces an "error sound"! If I try to open a folder, either it fails, or opens it having the address bar not there (as if XP is not able to "display" things right or it has run out of memory to handle open Windows / Softwares! if i try to right click on anything, the right click context menu doesn't show up!!! Facts: 1. When such failures start to occur after 7-8 days of system uptime, i check the RAM on the task manager > i have more than 1 GB free! 2. If close all running programs and try to open new ones, this succeeds, but after a while, it starts to fail again to open Windows/Programs 3. If I restart the system, after a restart, everything runs well 4. Virtual memory: still have GBs free 5. Limited HDD space: NO 6. Viruses: scanned it before several times and no viruses/spywares detected (using Microsoft Security Essentials) 7. Tried adding more RAM - removing old RAM stick > problem persists Question: what is this behaviour and how can I solve it ?!!!!!!!!!!!!!!!!!