I’m getting these messages when using Acronym:

7: [Mon May 05 14:58:46 2008] [error] [client 76.175.237.24] PHP Notice: Undefined variable: replace in /.../modules/acronym/mod.acronym.php on line 52, referer: example.com/articles/item/62906/
8: [Mon May 05 14:58:46 2008] [error] [client 76.175.237.24] PHP Warning: Invalid argument supplied for foreach() in /.../modules/acronym/mod.acronym.php on line 52, referer: example.com/articles/item/62906/

This is in the CP?

It’s a known issue. There’s a couple compatibility issues with Acronym and ExpressionEngine 1.6.3
We’re working around to getting a fix for it

Thanks for your patience…