Hmm I wonder why Intel's page is behind, you are the second one to tell me that this week. Maybe there is a issue with .1011 version and intel pulled it but gigabyte has not from their site? They are often behind in things
I am not sure about what is added in the BIOS updates, but the do not show all fixes they add, just the major ones.
Be sure you flash your BIOS in Qflash with a floppy or a USB stick, do not use @BIOS. And be sure you use the correct BIOS for your board revision, see here at the top and pick your board revision then go into BIOS link. Or here is a link for each. I assume you have 1.x or 2.0 because the 2.1 does not show a F2 bios at all. I do see alot of fixes added between F2 and F10 which it is up to now (Non beta)
Rev 2.1
GIGABYTE - Support - Motherboard - BIOS - GA-P35C-DS3R (rev. 2.1)
Rev 2.0
GIGABYTE - Support - Motherboard - BIOS - GA-P35C-DS3R (rev. 2.0)
Rev 1.x
GIGABYTE - Support - Motherboard - BIOS - GA-P35C-DS3R (rev. 1.x)
Your board revision is on the box, or if you do nto have you can see it in the bottom corner of the PCB under the PCI slots
BIOS flash can cause problems if done improperly you are correct, but you should be fine if you do it in Qflash. be sure once you do to go in and choose "Load Optimized Defaults" then save and apply and reboot, then come back into BIOS and make your changes you need to do
Of course BIOS flash is up to you, but you are having issues, and you are way behind in BIOS's so the if it isnt broke dont fix it saying does not apply to you as your board is "Broke" in a way, and you a very far behind in BIOS's. I would flash it if it was me, I do it often and have NO issues, just do not use @bios and do not shut off your pc while doing so, or do not do it in a storm or something like that where you think the power may go out while doing so.