[TxMt] warning when inserting citation in latex

[Claus]

Hi,

I just noticed that when trying to insert a citation in latex via ALT+ESC in the latex bundle, this warning occurs.

/Applications/TextMate.app/Contents/SharedSupport/Support/lib/ui.rb:177: warning: Insecure world writable dir /usr/local in PATH, mode 040777

What does this mean? Certainly I didn't set any permissions manually. I'm a little confused, the Finder says /usr/bin is 755. 

Thanks for your help!