Update.<br><br>I decided to partition my internal drive and build another Mac OS X Snow Leopard for testing.<br>I wanted to rule out any software conflicts that may have been causing my QGIS to crash on symbology changes<br>
<br>Re-installed Williams's great Framework dependancies and tested his builds of QGIS with shapefile data from Natural Earth.<br><br><ul><li>I noticed that if I TURNED OFF the selections for:</li><li>Make lines appear less jagged at the expense of some drawing performance</li>
<li>Fix problems with incorrectly filled polygons</li><li>Under PREFRENCES/ >OPTIONS window< / RENDERING tab / Rendering quality</li></ul><br>The statistical occurrence of QGIS crashing while changing a layers symbology drops ~50% to 1 in every 4 symbology changes.<br>
<br>The next question, (if I am the only Mac OS X user having these issues), is if there is some sort of hardware issue?<br>I ran an the extensive Apple Hardware Test and came up clean..<br><br>I'll attach a Hardware Overview FYI.<br>
<br><b>Hardware Overview:</b><br> Model Name: iMac<br> Model Identifier: iMac8,1<br> Processor Name: Intel Core 2 Duo<br> Processor Speed: 3.06 GHz<br> Number Of Processors: 1<br> Total Number Of Cores: 2<br>
L2 Cache: 6 MB<br> Memory: 4 GB<br> Bus Speed: 1.07 GHz<br> Boot ROM Version: IM81.00C1.B00<br> SMC Version (system): 1.30f1<br><br><div style="margin-left: 40px;"><b>NVIDIA GeForce 8800 GS:</b><br> Chipset Model: NVIDIA GeForce 8800 GS<br>
Type: GPU<br> Bus: PCIe<br> PCIe Lane Width: x16<br> VRAM (Total): 512 MB<br> Vendor: NVIDIA (0x10de)<br> Device ID: 0x0609<br> Revision ID: 0x00a2<br> ROM Revision: 3234<br><br><div style="margin-left: 40px;">
<b> Displays:</b><br></div></div><div style="margin-left: 120px;"><b>iMac:</b><br></div><div style="margin-left: 120px;"> Resolution: 1920 x 1200<br> Pixel Depth: 32-Bit Color (ARGB8888)<br> Main Display: Yes<br>
Mirror: Off<br> Online: Yes<br> Built-In: Yes<br><br><b>Cinema HD:</b><br> Resolution: 1920 x 1200<br> Pixel Depth: 32-Bit Color (ARGB8888)<br> Mirror: Off<br> Online: Yes<br> Rotation: Supported<br>
</div>