I noticed a small typo in one of the templates (I'm not sure if this has been addressed, but I'm not hunting through 47 pages - I did a search and had no results).
In
vbxirc_index, find:
HTML Code:
<param name="quitmessage" value="$vboptions[qutmsg]">
Replace with:
HTML Code:
<param name="quitmessage" value="$vboptions[quitmsg]">
Otherwise, the quit message you set in the vBXirc Settings will not take effect.