Well I had just gotten along on my new site (and really enjoyed using wp so far) when I received this crash that's left me helpless.
When I try to go to my dashboard, instead of loading the page, my browser asks me to download it in the "opening index.php" (choose application to open with, or download to disk) way.
I had this same problem with a certain article on my site yesterday, but to resolve that I just deleted and replaced that article.
The problem occurs in Firefox, IE, Safari and all other browsers: it's global!
The first problem was caused when I edited my .htaccess to include the lines:
AddType x-mapp-php5 .php
AddHandler x-mapp-php5 .php
I had to do this because my brilliant host 1&1 sets up all accounts with php4 instead of 5 and I needed php5 for some plugins.
This dashboard problem occurred after no changes to the codes since the .htaccess.
If someone could explain to me why this is happening and how I could fix it, I would be very grateful.
Thanks