I have quite obscure issue that seems to be limited to AN Hosting. If I try and upload any plugin via url it simply displays a white screen and stops. I can back space teh browser to get back to install plugins page again ok. I have tried this on at least 6 other hostings with no problems but with around 30 blogs on AN Hosting it does not work.
I have tried deactivating all other plugins and activating the default theme. It is running PHP 5.3.18 and WP 3.4.2.
Can you shed any light on this or offer any suggestions as to how to go about finding the issue?