By default the upload size is 8Mb to increase the File Size limit in moodle (eg. increase limit to 50Megabytes) you will need to make the following changes:
In your php folder edit the php.ini file and change the following values:
post_max_size = 50M
upload_max_filesize = 50M
Note: On windows I had to restart IIS but I am not sure if you will need to restart apache on windows or linux.
Next go into Moodle (in this case it is version 1.9.5) as admin and change the drop down menu’s for the following to your required size:
Courses -> Course Default Settings -> Maximum Upload Size
Modules -> Activities -> Assignment -> Maximum Size
After doing a repair on a windows installation which was corrupted we were getting the following error when trying to go to a website from the address bar of Internet Explorer 6 and also when clicking on the windows update icon on the start menu.

I believe this was occurring because prior to the repair the computer had Internet Explorer 8 and some IE8 settings must have been still hanging around causing problems.
To fix this I was able to download the full version of IE8 from http://www.microsoft.com/windows/internet-explorer/worldwide-sites.aspx (or just google for “IE8 download”) using an installation of Firefox on the system and then installing it off of the hard drive. After a reboot I was able to run windows update and browse again.
If you don’t have another browser on the system just download the installation files on another system and copy them over using some sort of external drive.
Some websites say that you can uninstall the previous installation of IE8 or IE7 using the Add/Remove programs but in this case the entry was not in the list. There is also an uninstaller under c:\windows\ie7 or c:\windows\ie8 but the uninstaller failed in this case.
To migrate your firefox settings from XP to Windows Vista or Windows 7 you will need to copy the below folder with firefox closed.
“c:\Documents and Settings\ProfileName\Application Data\Mozilla” to “C:\Users\ProfileName\AppData\Roaming”