GbE2C switch telnet time out

[mghabrai]

Hi After i configure tacacs+ for the switch . telneting into switch timeout real quick so we can not do anything. befoire i even finish typing my password. i tried changing the "idle" time under /c/sys/ but the time out resets back to the value 0 after i try logging back. for some reason it wont let me apply the changes. i have upgraded to a newer version thinking it might be a bug in the old version but it did not solve the issue. so far this is an on going issue with both version 5.1.3 and 5.2.7 switches. Any help is really appreciated Mary