Running QGIS 1.8 after loading various libraries as required.
Taking 2 minutes from clicking on icon to having application running on MBA mid-2012 with 128G SDD and 8GB RAM.
Lots of log entries for unresolved DYLD issues:
2/08/12 1:23:10.000 PM kernel: QGIS (map: 0xffffff80336e6308) triggered DYLD shared region unnest for map: 0xffffff80336e6308, region 0x7fff94200000->0x7fff94400000. While not abnormal for debuggers, this increases system memory footprint until the target exits.
Also repeated calls for SIMBL:
2/08/12 1:20:59.599 PM QGIS: Performance: Please update this scripting addition to supply a value for ThreadSafe for each event handler: "/Library/ScriptingAdditions/SIMBL.osax"
running 10.8 so I guess some of the slow startup is due to calls to SIMBL, but 2 minutes does seem a long time..
would have preferred to log bug report on dev web pages but wasn't interested in establishing user acct and more, so posted here. Happy to contribute to any trouble-shooting that might solve this for me.