The mailing list for listmasters using Sympa

[Umut Arus <address@concealed>]

Hi,

I have used sympa 5.4.2 and created about 400 lists. There is a slowness 
when clicking on topics (categories). It waits while listing the email 
lists on page. The server is idle and no performance problem. However, 
there is no slowness on the sympa home page.

What may be the source of problem?

thanks in advance,