Sweating the small stuff is what this Apple mobile operating system update is all about or, “ah-boot,” as my hoser friends say. Actually, I don’t have any friends on the more polite and culturally adept side of Lake Erie.

However, if I did, they would most certainly say iOS 5.1.1 Update is here, available and comes to market with a fairly shortlist of changes baked in:

• Improves reliability of using HDR option for photos taken using the Lock Screen shortcut
• Addresses bugs that could prevent the new iPad from switching between 2G and 3G networks
• Fixes bugs that affected AirPlay video playback in some circumstances
• Improved reliability for syncing Safari bookmarks and Reading List
• Fixes an issue where ‘Unable to purchase’ alert could be displayed after successful purchase
• Requirements: An iPhone 4S, iPhone 4, iPhone 3GS, iPad 2, iPad or 3rd/4th generation iPod touch running iOS 5 or later
• To apply: Go to Settings > General > Software Update

iOS 5.1.1 also comes to market with security content, which includes patches for a URL spoofing issue, cross-site scripting attack and the ever popular “unexpected application termination or arbitrary code execution” problem — knowledgeable folks say the URL spoofing vector is the most serious.

That said, I applied iOS 5.1.1 Update via Apple’s PC Free (a.k.a. other the air) feature to the original iPad, two 4G iPod touches and iPhone 4 under my care — happy to report all went well.

And, there was much rejoicing…

What’s your take?