This sounds like a css issue. Seems like you know how to edit css since you changed the width of the right column, right?
You should extend the css view with some of your own css that will make the textearea input stretch.
http://docs.elgg.org/wiki/Views#Extending_views
Webgalli is good :) They are fast, friendly and very responsive in getting the site set up and I have full cPanel access.
I worked on my site on localhost and gave them that over in the morning and in the evening my site was up and running :)
I still have not released it fully, bt just for test users, as I have things/tests to do on it which can be done only on live site. They also have good hosting plans and rates.
I can recommend them to anyone with no doubts :)
HaPPy ElGGInG :)
Do GooD :)
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