whats the cross between lag and crashing? cragging?

ive posted a thread about this before and its doing my nut.sometimes for no apparent reason when i click a lobby on multiplayer it lags and crashes. i have to try multiple things to stop this, but only temporarily. i have to:
-open ie(becuase thats wat zk uses)
-play a singleplayer game
-mess around with the settings
-redownload the game

it cud be my rubbish computer or my crap[py internet connection? :/
its really annoying me and i dont know wats causing it. does anyone know wat it might be?

does anyone else have this problem?

thx in advance! :P

07/12/2012 5:25:31 PM: Error setting IE compatibility: System.UnauthorizedAccessException: Access to the registry key 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION' is denied.
at Microsoft.Win32.RegistryKey.Win32Error(Int32 errorCode, String str)
at Microsoft.Win32.RegistryKey.CreateSubKeyInternal(String subkey, RegistryKeyPermissionCheck permissionCheck, Object registrySecurityObj, RegistryOptions registryOptions)
at Microsoft.Win32.RegistryKey.CreateSubKey(String subkey, RegistryKeyPermissionCheck permissionCheck)
at Microsoft.Win32.RegistryKey.CreateSubKey(String subkey)
at Microsoft.Win32.Registry.SetValue(String keyName, String valueName, Object value, RegistryValueKind valueKind)
at ZeroKLobby.Utils.SetIeCompatibility()
07/12/2012 5:25:31 PM: Error setting IE compatibility: System.UnauthorizedAccessException: Access to the registry key 'HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION' is denied.
at Microsoft.Win32.RegistryKey.Win32Error(Int32 errorCode, String str)
at Microsoft.Win32.RegistryKey.CreateSubKeyInternal(String subkey, RegistryKeyPermissionCheck permissionCheck, Object registrySecurityObj, RegistryOptions registryOptions)
at Microsoft.Win32.RegistryKey.CreateSubKey(String subkey, RegistryKeyPermissionCheck permissionCheck)
at Microsoft.Win32.RegistryKey.CreateSubKey(String subkey)
at Microsoft.Win32.Registry.SetValue(String keyName, String valueName, Object value, RegistryValueKind valueKind)
at ZeroKLobby.Utils.SetIeCompatibility()
this is the stuff in red, and i dont know how to replicate it, its just random, it might be when my internet is slow and someone else in the house is downloading or uploading something

IE that ZKL is using tries to run in "compatibility mode" emulating older verison of IE which screws the site looks.

So ZKL tries to set IE embedded into ZKL to not use compatibility mode.. apparently sometimes this fails :(

No idea :( Probably disabling UAC would fix it but dont bother its not really important.