I am getting the same error.
I have had no problems using the minified version of jQuery 1.42
But with 1.51, the minified version fails to load. When I debug in safari, i see an error "Syntax Error: Parse Error" pointing at jQuery.
If I use the full, non-minified jQuery 1.51 it works fine. However this is for a mobile web application and there is no way I can spare the extra 150k of the non-minified version.
UPDATE:
I have confirmed that all minified versions from 1.43 onwards cause the Syntax Error in my browsers (safari osx, firefox osx). 1.42 minified works just fine. This implies that whatever changed in 1.43 introduced the potential for this error. I am pulling these versions from the jquery site.
Note also that I am combining all my JS files into one file, because this is a mobile web app and file count must be at an absolute minimum. But jQuery is at the top of the file.
If someone at jQuery wants to look into this, and see the error for yourself, please contact me directly and i can supply you with the url and account info to see it break.