Well, OFB had a few problems for me with that blue screening issue, but that was solved.  Where things really started to screw up is with Pets.  I haven't really been able to play the game since then.

Last time I was able to play for hours was last October.

OK, I've been to other Sims-related forums, but no one can figure out what the problem is.  I've done to routine things:  defragging and clean up (not an idiot; this is something I do every day), dusting the case and parts, checking the temp on the fan (stays between 47 to 52 degrees while gaming), toyed with different drivers (I was one of the unfortunate ones who needed the 84.21 driver for Nvidia after OFB came out because of the damn blue screening), pulled out downloads to see if they were the issue...you name it, I've done it, and I still have problems.  I added Seasons, which will play, but I still have the same problem --

After about 10 minutes of play, the game stops functioning in bits and pieces.  First, random objects and sims become highlighted in yellow or red.  Sometimes I lose objects and walls, being left with what I can only label as "outlines" of where a house used to be.  I can escape from the game and pop back in, and everything is fine.  Then several minutes later, it starts again.  After a few times of this, the game exits by itself.

I haven't figured out if this is still a driver problem, a memory problem, a problem with my FX 5500 (that card is probably on its death bed with these games), or if it's still some damn object that's causing a problem.  I haven't been able to play the game in months because of this (I'd thought it was a card problem, so I was waiting to afford a new card).

Has this happened to any else?  I've searched, and I haven't found anyone with a similar problem.  I hope someone here can help (because I know that this is where the bright people are).

Some specs before anyone asks:

Processor:  AMD Athlon(tm) 64 Processor 3500+,  MMX,  3DNow, ~2.2GHz
Memory: 1024MB
Page File: 324MB used, 2136MB available
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
Card name: NVIDIA GeForce FX 5500
DAC type: Integrated RAMDAC
Display Memory: 256.0 MB
Current Mode: 1024 x 768 (32 bit) (85Hz)
Driver Name: nv4_disp.dll
Driver Version: 6.14.0010.9131 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Driver Date/Size: 6/1/2006 17:22:00, 4529408 bytes
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled

If you need anything else, let me know.