Hi, 
i have been flying Lomac online for years now on my Win2000 machine without problems, recently i upgraded to WinXp SP2. Ever since then i cant fly online, as soon as i close in on another aircraft, it starts warping lime mad and lockon freezes every 2 seconds for about half a second. 
The warping increases as i get closer until i finally loose connection to the server. 
I can watch other planes in external views without problems, only if i close in on them things go bad, which is quite annoying because i fly formations mainly. 
I connect at 128/128. 
It seems to be not ping related, pings were well below 100 with only 2 people online when i first got that problem. 
If i host a game, other players notice slight stuttering as well, although its way worse if i connect as a client. 
No signs of problems in SP at all. 
Even if i stay away from other planes, i get disconnected after a while for no apparent reason. 
I found loads of threads covering MP stutter, but they all date back before 1.12a and the first stutter-fix. 
Oh, of course LockOn is patched up to date.   
My Specs: 
AthlonXP@1,8Ghz 
Asus A7N8Xe deluxe 
1GB DDR@150Mhz 
Geforce6800LE softmodded to GT 
100Mbit onboard NIC 
WinXP SP2 
Forceware 93.71   
Thanks for your help,   
S!