Access Violation at address XXXX / WXP

Every time I leave my desktop alone for any length of time (more than 5-10min), when I return to it, I have many, many windows open that state:

Access violation at address 13183580 in Module '10LOSM~1.DLL' Read address of XXXXX (didn't get this part - let me know if it's important and I'll include it)

Will appreciate any help you can give me. Here's the results of TSG utility:

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows XP Home Edition, Service Pack 3, 32 bit
Processor: Intel Pentium III Xeon processor, x86 Family 6 Model 23 Stepping 6
Processor Count: 2
RAM: 3061 Mb
Graphics Card: Intel(R) G33/G31 Express Chipset Family, 128 Mb
Hard Drives: C: Total - 473493 MB, Free - 413286 MB;
Motherboard: Dell Inc., 0RY007
Antivirus: Norton Security Suite, Updated: Yes, On-Demand Scanner: Enabled