Ubuntu :: Frequent Segfaults In Various Programs

In LMMS, pretty much any time where pressing a key or button is supposed to do something, it can crash. Regardless of what made it crash, it always dies in the exact same way: The window just disappears, and I get the line "Segmentation fault" in the console. Usually it crashes within 15 minutes of normal use. Not even 6 hours after I downloaded the program, I had given up trying to use it. Over the next week, a couple other programs crashed with segfaults.

Most of them only crashed once (among those was Firefox). So, of course, I'm now beginning to think that maybe the problem is not with LMMS, but rather with Ubuntu. I've had very little luck getting most of these programs to crash a second time, but I did find reliable ways to reproduce the crash in LMMS and Golly, so I got debug logs of those (with backtraces and steps I took to reproduce):

Code:
What I did to make LMMS Crash:
1. After starting LMMS, created an instrument track using the Oh Synth preset (under LB302)
2. Opened the tool window for the track.
3. Dragged my cursor back and forth across the keys on the virtual piano at the bottom of said window to play them.
4. Within 3 seconds, it crashed.

Starting program: /usr/bin/lmms
[Thread debugging using libthread_db enabled]
[New Thread 0xb7d62b70 (LWP 4674)]
[New Thread 0xb2c18b70 (LWP 4677)]
[New Thread 0xb2417b70 (LWP 4678)]
[New Thread 0xb195ab70 (LWP 4680)]
[New Thread 0xb1159b70 (LWP 4681)] .....

Code:
What I Did to make Golly Crash:
1. After starting Golly, loaded the example file "Still-Lifes/eaters.rle".
2. Alternated between Space (Next Generation) and Ctrl+Z (Undo), holding each for about 1 second.
3. Within 15 seconds, it crashed.

Starting program: /usr/games/golly
[Thread debugging using libthread_db enabled]

Program received signal SIGSEGV, Segmentation fault.
0x080fd47c in UndoRedo::RememberGenFinish() ()
#0 0x080fd47c in UndoRedo::RememberGenFinish() ()
#1 0x080f855c in MainFrame::NextGeneration(bool) ()
#2 0x081124f5 in MainFrame::OnMenu(wxCommandEvent&) ()
#3 0x00621a9f in wxAppConsole::HandleEvent(wxEvtHandler*, void (wxEvtHandler::*)(wxEvent&), wxEvent&) const () from /usr/lib/libwx_baseu-2.8.so.0
#4 0x006c0379 in wxEvtHandler::ProcessEventIfMatches(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&) () from /usr/lib/libwx_baseu-2.8.so.0 .....

I've tried using different governors for CPU (Conservative, Ondemand, etc.), and these crashes continued to occur. I also tried using a different kernel to no avail; the crashes occur both on 2.6.32-21-generic and 2.6.31-17-generic. How to fix whatever's causing these segfaults.