Avast Home & BullGuard V8 antispam

i need a anti spam application and so i had try the bullguard (freeware).
the problem is that avast block the communication then:

Konto: ‘RENAME.COM’, Server: ‘mail5.RENAME.com’, Protokoll: POP3, Serverantwort: ‘-ERR concurrent connections limit in avast exceeded(pass:20, processes:svchost.exe[20]), there is a collision with another program’, Port: 110, Secure (SSL): Nein, Serverfehler: 0x800CCC90, Fehlernummer: 0x800CCC90

i use windows vista business with sp1 and windows mail and all update.
windows firewall is off.

i had try it on a other computer. also avast but with ms office2007 outlook and exchange server and this is running well.

any ideas ?

This is the collision that is the issue, processes:svchost.exe[20] so something is using svchost.exe, for something which I find strange as it would normally be an application using the connections and not svchost.exe (a system file, depending on its location)

Please do a search for svchost.exe and report the locations it is found in e.g. (C:\windows\system32\svchost.exe) ?

Does Bullguard monitor your email ?
If so this could be the issue, though I would have to question the svchost.exe connections, try disabling the bullguard email monitoring and see if that helps.