Hi Pauly,
As per your other post on:
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1251130649/9#9
and the suggestions here.
Ive tried removing cli() and it made no change to my sketch using the simpleserver sketch and liquid crystal.
Unlike your twitter sketch my webpage is served up and works as expected but the lcd doesnt receive any of the commands or text I send it from within loop() but does still from within startup().
So looks like we have to wait for AsyncLabs to have a look or try another method of accessing the lcd.
Such as serial or I2c in this instance. Or maybe one of the earlier 4bit lcd libraries will work.
Gordon