Visit counts are very low and Time on site is very high since upgrading to 2.1

All the stats for all of the sites in my system are showing these strange stats now. The visitor counts are a lot lower but the impressions counts are ok. The actions per visit is very high and the time on site is incredibly high. This all happened right after I upgraded to Piwik 2.1.

Any help would be appreciated.

March 1st stats

Campaigns 42848 42389 370030 8.64 3 min 49s 35.01%
Direct Entry 1842 1592 11420 6.2 3 min 37s 43.92%
Websites 351 323 1873 5.34 2 min 34s 52.42%
Search Engines 14 12 114 8.14 5 min 59s 35.71%

March 9th stats

Campaigns 8261 8146 249956 30.26 19 min 9s 27.44%
Direct Entry 967 914 62087 64.21 23 min 57s 25.13%
Websites 93 90 3956 42.54 18 min 58s 35.48%
Search Engines 5 4 30 6 7 min 39s 60%

Hi,

I noticed the same problem using Piwik 2.1 (I haven’t use previous versions) : the actions count is almost the same as Xiti and Google Analytics, but visitors an visits are more than 7 times lower than Xiti and GA.

And for the time on site, Piwik indicates an average of 27 minutes whereas Xiti and GA are about 12 minutes.

Here are the stats for yesterday (26/03/2014) :


        visits      visitors      page view
piwik    15 186       12 361      1 781 932
Xiti    113 851       87 131      1 809 287
GA      131 904      102 438      1 842 487

I checked in database and these counts are the same than in piwik_log_link_visit_action and piwik_log_visit, so I think there might be a problem during recording and not during archiving.

I opened a thicket on Trac for this problem.

http://dev.piwik.org/trac/ticket/4921