Some people were reporting weird errors only recently with the add a link script. If you were using the weblogs checking code on your page – you'll need to fix this. (In a recent update to PHP – a minor thing changed and requires a change in this script)
Please go here: http://www.scriptygoddess.com/archives/001093.php#13063 to see the fix.
I'll update the download, but just in case you already have this downloaded and installed, it's a simple enough fix that you should be able to do it and can save yourself the hassle of another download…
UPDATE: It looks like my bug fix may not be needed after all… If you're getting errors, give it a try. If you're not – don't worry about it.