[TYPO3] Avoid caching

[PEF]

Hi,

When users are logged in, there name and last login is displayed in the 
top right corner.
The problem is, that the pages are cached by typo3 and therefore 
displays the data from the first user who logged in since the last time, 
the FE-cache was cleared.

Dispite of turning off the cache generally, is there a way to avoid this 
caching of data?

This is the way, I display data:

temp_loginfo = COA
temp_loginfo {
    10 = IMAGE
    10 {
       file = fileadmin/sys/images/spacer.gif
       file.width = 1
       file.height = 1
    }

    20 = COA
    20 {
       10 = TEXT
       10 {
           data = TSFE:fe_user|user|name
          wrap = <td valign="bottom" 
class="LastLoginInfo"><strong>Bruger:</strong><br>|</td>
          if.isTrue.data = TSFE:fe_user|user|uid
       }

       20 < .10
       20 {
          data = TSFE:fe_user|user|lastlogin
          strftime = %d-%m-%Y
          wrap = <td valign="bottom" 
class="LastLoginInfo"><strong>Seneste login:</strong><br>|</td>
       }

      wrap = <table cellpadding="0" cellspacing="0" 
border="0"><tr>|</tr></table>
     }
}
lib.logininfo < temp_loginfo

Regards
Peter Falk