Cache profile Server, but still different results on different browsers/machines

[Jogai]

My action is decorated with [DonutOutputCache(CacheProfile = "Indexes")]

And these are my cache profiles: <outputCache defaultProvider="CacheManagerOutputCacheProvider"> <add cacheName="websiteCache" name="CacheManagerOutputCacheProvider" type="CacheManager.Web.CacheManagerOutputCacheProvider, CacheManager.Web" /> </outputCache> <outputCacheSettings> <outputCacheProfiles> <add name="Indexes" duration="32" varyByParam="" varyByHeader="Host" varyByCustom="edition" enabled="true" location="Server" /> <add name="Banners" duration="96" varyByParam="" varyByHeader="Host" varyByCustom="edition" enabled="true" location="Server" /> <add name="Blocks" duration="96" varyByParam="*" varyByHeader="Host" varyByCustom="today" enabled="true" location="Server" /> </outputCacheProfiles> </outputCacheSettings>

Sometimes I still get different results in different browsers. Where should I look for problems? During test this never happened. I'm running a multitenant app, but it only happens for a few it seems.