.T IOS performance problem

[infosateng]

I have a remote access vpn setup on a 2801 router (384Mb DRAM, 64Mb Flash) which works fine using IOS c2801-advsecurityk9-mz.124-25a.bin. I have try to upgrade to a .T IOS so I can setup the Browser Proxy Settings options. But when I upgrade I get very poor performance and 25% - 40% packet loss when pinging devices through the VPN. I have tried 3 different versions of the .T IOS,but still have the same problem.

Can someone tell me if there is an issue or let me know if I need to change my config.

[wdrootz]

These symptoms are possible on any hardware platform supported by version 12.4(11)T. All rebuilds of Cisco IOS release 12.4(11)T are affected (e.g. 12.4(11)T1, 12.4(11)T2, ...).

http://www.cisco.com/en/US/ts/fn/620/fn62854.html