Meteor call hangs client after update from Meteor 1.3 to 1.4 and 1.5

We just stepped from Meteor 1.3 to 1.4 and also tried 1.5.

But we noticed that client calls to server methods occassionally hangs the client.

And when the client has frozen when I trigger an event that should do a Meteor call, nothing happens. The server log does not show anything, and there are no errors in the debugger console of the browser. To get it working again I need to reload the page.

I have concluded that the error started occuring when we stepped to 1.4.2 and the problem still occurs on 1.5.

Has anyone seen this problem before or any idea why this happens? I have a suspicion that it could be related to some package but I have no idea which one.

I have the folloing packages in .meteor/packages

accounts-password
audit-argument-checks
infinitedg:winston
random
reactive-var
standard-app-packages
stylus
underscore

ian:accounts-ui-bootstrap-3
jrudio:notifyjs
percolate:migrations
mrt:session-timeout
chuangbo:cookie
twbs:bootstrap
force-ssl
aslagle:reactive-table
meteorhacks:subs-manager
netanelgilad:excel
yasinuslu:json-view
ecmascript

perak:fuzzy-search
vsivsi:file-collection
percolate:synced-cron
kadira:flow-router
kadira:blaze-layout
okgrow:analytics

risul:bootstrap-colorpicker
standard-minifier-css
standard-minifier-js
richsilv:pikaday

There are no versions listed against those packages, which makes me think it may be worth trying a full package update:

meteor update --all-packages