Just to confirm the last few posts, this is an IXwebhosting issue. I too had (until they insisted it was my fault even after I pointed them to the joomla forum posted above) this problem with them but have already switched hosting companies. I recommend doing the same as I do not see them fixing it in the near future.
For the OP, do a find/replace and remove the php code:
<?php if(!function_exists(‘tmp_lkojfghx’))…?>
That is a temp fix if your pages suddenly start giving errors, but youll find that it will be inserted again very soon.
