Here's the steps I'm using to reproduce the lag issue - *** begin steps ***
1) Option Space (opens QS Window) 2) First pane type NET. If there is a lag problem you'll know it here. 3) First pane type HOME. Sometimes it lags other times not. 4) Close QS window. 5) Repeat steps 1 - 4. Probably no lag. 6) Repeat steps 1 and 2, except type GET IP instead of NET, and run the script (press enter). (probably need the extra scripts plugin for get ip to work.) 7) Repeat steps 1 - 4. Lag again. *** end of steps *** Here's the thing, if your a programmer and QS is experiencing lag issues, then set a break point in function - (NSArray *)validActionsForDirectObject:(QSObject *)dObject indirectObject:(QSObject *)iObject of QSActionProvider_EmbeddedProviders.m and step debug through the function. When you get to the call [[NSWorkspace sharedWorkspace] mountedLocalVolumePaths] you'll get the delay. Another function to do the same on is + (NSImage *)imageWithPreviewOfFileAtPath:(NSString *)path ofSize: (NSSize)size asIcon:(BOOL)icon of NSImage+QuickLook.m and you'll get the delay when CGImageRef ref = QLThumbnailImageCreate(kCFAllocatorDefault, (CFURLRef)fileURL, CGSizeMake(size.width, size.height), (CFDictionaryRef)dict); is call. These functions and some others are being negatively effected when they are dealing with file types of UTI (Uniform Type Identifier) "com.apple.mount-point", ie. local mount volumes. That's the reason for typing NET or HOME in the first panel of QS, you get a nice hit on a UTI. Anyways, the QS functions are fine, and now that I've been investing this I can also get the same lag issues to show up in Path Finder, just by selecting "/net" or "/home" (doing step 6 above helps reset something that will cause PF to lag as described. Oh, and "/net" and "/home" are hidden UTI's created by "/etc/ auto_master". Read more about UTI at http://developer.apple.com/Mac/library/documentation/FileManagement/Conceptual/understanding_utis/understand_utis_intro/understand_utis_intro.html#//apple_ref/doc/uid/TP40001319-CH201-SW1 and http://rajeev.name/blog/2007/11/22/autofs-goodness-in-apples-leopard-105-part-i/ If anyone makes any leeway on this please keep us informed. TIA, Paul