You only need this patch if you run a server, but I'd recommend it to everyone just to be safe.
This patch replaces the server code only, it will not overwrite any config files.
Download IOS Beta 1.0a Server Patch for Windows (557K) from Fileplanet
(requires V1.0 already installed. Point the installer at your ios directory)
Download IOS Beta 1.0a Server Patch for Linux (507K) from Fileplanet (.so only)
Download full IOS Beta 1.0a for Linux (15.6M) from Fileplanet (full installation)
Changes:
Overhaul of slide tackles
Added mp_slidetackle 0-100 (percentage chance of knocking down player, 0 disables completely)
Added mp_freezekeeper (holds human keepers in goalmouth before penalty is taken)
Fixed goal kick exploit
Automatic red card rejoin message
Penalty/Fouls taken by player who was fouled
Throw in's taken where ball first went out
Improved teleport at kick off
Fixed offside on self occasionaly
Fixed offside when in own half (but in other half when receive)