Yeah i generally have 6-7 windows open all the time, with about 15 or so tabs between all the windows.
And I use flash player because I spend a lot of time on youtube. I'd rather use html5 on there, but a lot of the times it doesn't work right, and only 360p will be the only option available, but if I use flash, then I have all the quality options available. But since uninstalling and reinstalling flash, it seems to be running smoother, and hasn't crashed yet, so maybe that was the issue. But probably too early to say for sure.
And I ran that passmark a couple times, with no errors, however, trying to run the 3d graphics option, it would either crash, or freeze. Unsure of why, or what that means exactly.
As for what I do on my pc, like I said above, a lot of youtube. Also just regular browsing, listening to music on WMP, downloading music occasionally, and gaming, but that is mostly on emulators. As far as other issues, there isn't many, if any, at least nothing serious I can think of. Main thing is firefox crashing.
CPU - AMD FX-8350 Black Edition
Motherboard -MSI 990FXA-GD80
Ram - G.SKILL Ripjaws X Series 8GB (2 x 4GB)
Video Card - MSI Radeon R9 280
Storage - Western Digital Velociraptor 300GB 10k RPM
Power Supply - hec XP1080 800W
Case - Antec DF-35