Too many connections...

I run a small board. Vital stats:

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I get a few "too many connections" now and again. I have had 24 since the 17th Dec 06 so far.

I asked my reseller host to up the max connections, they said: "For a shared environment and 90 max connections at once that is a large amount of MySQL connections. If you're not using persistant connections that should be more than enough."

Persistant connections are off: $config['MasterServer']['usepconnect'] = 0;

Basically:

1. Is that really in line with my board stats? Is my board the biggest that can be held on a standard shared reseller account?

2. Is 90 reasonably enough? Is there a problem with my board?

3. If I want my board to continue reasonably, do I need to move upto VPS/dedicated servers? Or there any rough guidelines about what servers i'll need to host which size boards anywhere?

Many thanx guys