Attn: All Creative X-Fi users I have identified and solved the problem. The problem was with my Creative Soundblaster X-Fi soundcard. The issue was overall system instability with inevitable system crash in ~1.5 days of system uptime. The culprit was Creative's DLLML.exe process. Solution is posted in post #11 of this thread. I'll start by listing my hardware (if I leave something out, I'll add it later): CPU: Core 2 Duo 6420 (stock 2.13ghz, overclocked at 2.85ghz). Front Side Bus speed = 1424mhz (from overclock. 1066 stock). Motherboard: Gigabyte P35-DS3R. Bios updated. Memory: 4GB Corsair TWIN2x2048-8500C5 (4x1GB sticks) GPU: GeForce 8800GTS EVGA KO ACS3 edition (320MB version). Drivers updated. Soundcard: Soundblaster X-Fi Xtreme Music. Drivers updated. Power Supply: OCZ GameXtreme 700W Hard Drive: Seagate Barracuda ST3320620AS 320GB 7200rpm SATA 3GB/s. OS: Windows XP Professional (I have been using service pack 2 until a few days ago when I upgraded to service pack 3, but noticed little improvement). Problems are as follows (I am including what I can think of at the moment, I'll add more as I remember them): Basically I suffer from overall system instability. This happens whether my processor is overclocked or not, so I've ruled that out (plus I've tested it for a day with prime95 and stressprime no errors and it's not running hot). I have also used memtest86+ to test the memory and it all passes as well. Here's a list of symptoms: Cannot open any Microsoft Office programs (word, excel, etc) without it either taking ~5 minutes to load or it hanging/crashing the folder containing the item I attempted to launch. If I wish to open such a document, I must first bootup word, etc, and then use file/open to open the document. Eventually, after the computer has been left on for between 12-20+ hours I usually start to notice system instability. If I am browsing the Internet, the browser will suddenly stop working or crash. If I have multiple folders open simultaneously then I may suddenly lose the ability to right click or do other basic functions. This problem continues until I close at least 1 of the folders, then the computer returns to normal. Same if I have folders + web browser open: if I close either a folder or the browser, computer functionality returns to normal. Sometimes I suffer from instability with certain games if my computer has been on for hours before I load the game. Battlefield 2, for example, will experience the same problems as Microsoft Office in that it will either take 2-7 minutes for the game to bootup, or it just won't bootup at all. Yet the BF2.exe is in the task manager just hanging, but still responding. The only way to get BF2 to boot is to reboot the computer, then it works fine. Or if I'm in Company of Heros, it will randomly crash the game. Or, if it does let me bootup BF2 without having to reboot I may get a BSOD (same with CoH). Random, but seldom, BSOD. I'm not sure what the error is, but once in a while if my computer has been left on too long and I have been experiencing system instability and do not reboot my computer, I have gotten a BSOD (usually with instant forced reboot). So long as I continually reboot my computer (~ once a day) it runs fine, which raises certain questions. Symptoms right before BSOD: Some internet applications stop working (Trillian (aim, msn), web browser). At some point I hear several system error beeps, but nothing happens. Then symptoms above may occur or the blue screen will just randomly come. So far I have noticed that a majority of problems seem to stem from the soundblaster X-Fi software. The DLLML.exe file appears to be unstable and seems to be linked to problems with instability running games like BF2. Also, I am curious if there may be a conflict between my videocard and soundcard, but I have noticed nothing in the event viewer or device manager. Also, no error logs are created prior to BSOD crashes. It is possible my Windows XP install CD is corrupted and has given me a shitty install as the CD is > 4 years old and scratched. I have no way of checking the integrity of the files on the CD. Service pack 2 (and 3) I have downloaded and installed from M$. I also would like to test my hard drive for consistency, but do not know of any diagnostic software, so if anyone recommends any, please post it. If anyone thinks they may be able to identify certain problems/issues please post them. If you need additional information, I will be happy to provide it. Thank all of you for your assistance and contributions.