Access Database Size

i have about 6000 users, 40.000 messages and max online user at one time is nearly 10.. my access db size is 100 mb and i'm using wwf v7.9.. i didnt have any error or slowing yet.

(1)but sometimes while clicking to a link, connection dont responses about thirty seconds and then loads the page fastly. i think it is about my host. isnt it? or this is a database slowment?

(2)am i have to change my server to SQL? or can i continue it until nearly 500 mb access database with these online statistic?

what is your opinions about these statistics and growing? sorry for my bad english:) and regards..

For a forum that size Access database is way to much because of the amount of read and writes performance on the database to get all the data, however, if you really can't use SQL Server or mySQL you should at very least upgrade to version 8 not only for security, but also because it has been highly optimised cutting many pages from over 30 database hits down to no more than 2 or 3 for most pages so would be much better and faster and many less database hits so less chance of database corruption.